Icon-oo.png This article is about a/an ranger in Power Rangers Operation Overdrive.

"Kick into Overdrive! Red Ranger!"
―Roll Call

"I'm using all the power I have!! Hiyah!!!"
―Final words before his death as an android.[src]

Mackenzie "Mack" Hartford is one of the main protagonists of Power Rangers: Operation Overdrive. He is the son of billionaire Andrew Hartford and an avid adventure novel reader who becomes the Red Overdrive Ranger, the Red Ranger of the Overdrive Rangers.


Early Life

Billionaire and adventurer Andrew Hartford wanted a son and, due to his work, was never able to meet the right woman to make his wife. He then built an android and named him Mack. Mack was programmed with memories of his father's own childhood, so he could live as a normal teenager. Andrew and his butler, Spencer, then photoshopped old photographs to include pictures of Mack when he was a "child". Tvicon.png TV STORY-Things Not Said Mack continued his existence not knowing of his true origins. Outgoing and enthusiastic, he was sheltered by his father and had the desire to prove himself. Mack is heavily into adventure novels and other escapist fantasies. He was the only Ranger not deliberately recruited, the powers being intended for use by his father, being involved in Operation Overdrive by accident and against his father's initial wishes.

Kick Into Overdrive

Two years after his activation his father had found the Corona Aurora, and it had released Moltor and Flurious from their imprisonment. The Sentinel Knight then appeared to Andrew Hartford to convince him it was now his responsibility to protect the crown and its jewels from evil. Andrew then went to work building the Overdrive Rangers's powers, zords, and weapons.

Andrew then recruited Will Aston, Dax Lo, Ronny Robinson, and Rose Ortiz to be Power Rangers, as it was his intention to become the Red Ranger. After convincing that group to become Rangers, he altered their DNA to have genetic powers. As Mr. Hartford was about to get his enhancement, Mack walked in, interrupting the procedure. This caused an impromptu meeting between Mack and Andrew. Moltor's Lava Lizards then came to the Hartford estate, causing the Rangers to have to take off. Andrew gave the Rangers their morphers, and had them go ahead. Andrew was about to morph and join the four recruits, but was captured by some Lava Lizards, causing his morpher to break free. Mack picked up the morpher and morphed into the Red Overdrive Ranger. He led the other Rangers to a victory over the Chillers and Lava Lizards. He showed bravery and quick tactical thinking in his first battle and was quickly accepted and trusted as leader by the other Rangers.

After returning to base, Moltor captured Mr. Hartford and the Corona Aurora. Mack led the other Rangers to Moltor's lair and saved him, but couldn't get the crown. After defeating one of Moltor's giant monsters, Andrew gave his blessing to Mack to become the Red Ranger as he thinks that Mack looks better in red. He was given a suit and what was assumed to be a genetic power - super strength. Tvicon.png TV STORY-Kick into Overdrive

Brownbeard's Pearl


Mack is also very understanding of the meaning of a team. When Will was having difficulties adjusting to working with a team, due to only doing solo work for his whole life, he helped him. Tvicon.png TV STORY-The Underwater World With Mack's leadership, the team found the three scrolls, which when combined, turned into Neptune's Sword, which led them to St. Lucia. Tvicon.png TV STORY-Heart of Blue At St. Lucia, they found the Eye of the Sea. After realizing that the Eye wasn't a jewel of the Corona Aurora, the team traded it to Brownbeard for a pearl. The Pearl turned out to be the first jewel of the crown. Tvicon.png TV STORY-Pirate in Pink

Toru Diamond


After reading upon the Hou-Ou bird, Mr. Hartford concluded that it would lead them to the next jewel. Will tricked Miratrix in order to get to the parchment, but unfortunately freed Kamdor from his jewel prison. Tvicon.png TV STORY-Both Sides Now After the Rangers retrieved the parchment, Moltor sent a creature named Tyzonn to retrieve it. Mack, realizing that Tyzonn wasn't evil, convinced him to join the Rangers to save the world. Tyzonn used citrus acid in lemonade to get the location of the jewel hidden in the parchment. Mack and Tyzonn took the Sonic Streaker to the volcano to get the Toru Diamond. The two jewels were later used to turn Tyzonn back to his true form. Tvicon.png TV STORY-Face to Face

Blue Sapphire


When an expedition camp is attacked by new villains known as the Fearcats in Brazil, the Rangers worked with Tyzonn to stop them. Flurious tests his gyros on the Fearcats, Mig and Benglo, turning them into powerful cyborgs. It's a race against time for the Rangers to save Tyzonn and stop the Fearcats from destroying San Angeles. Tvicon.png TV STORY-Man of Mercury The Rangers traveled to Norway and raced Moltor to the mystical hammer Mjolnir. Moltor retrieves it first, the Rangers then attempt to take Mjolnir back. Tracing the connection between the Cannon of Ki Amuk and Mjolnir, the Rangers travel to Mexico and are ambushed. In the process, Loki appears, masquerading as Thor, and steals Mjolnir. To get it back, Ronny disguises herself as the goddess Freyja. After the Rangers use the Cannon of Ki Amuk and Mjolnir to get the Piedra Aztec del Compás it gets stolen by Moltor. Tvicon.png TV STORY-It's Hammer Time Moltor sends Blothgaar to fight the Rangers. Mack is blasted by the Compass and is overcome by a serious case of a bad luck, which should have been impossible since he was a robot. Later Mack was freed from the curse with the help of his friends and they returned compass. Tvicon.png TV STORY-Out of Luck The Rangers then used the compass to find the Blue Sapphire, which was stolen by Kamdor and Miratrix. Tvicon.png TV STORY-One Gets Away

Star of Isis


"One Fine Day" revealed Mack's memories of a happy childhood ten years ago don't match with reality, with Andrew mentioning Mack first appeared only two years ago; additionally, he was unable to pass through the Fearcats's forcefield in the same episode, despite maintaining continuous physical contact with Tyzonn and Rose who had already successfully passed through. Tvicon.png TV STORY-One Fine Day In the final scene of Ronny on Empty II, Andrew was initially startled to see Mack's choice of Halloween costume, that of a robot. (Andrew's, fittingly, was that of a Frankinstineish mad scientist). Tvicon.png TV STORY-Ronny on Empty

Mack was finally revealed to be an android when he was affected by the same computer virus created by Kamdor's monster that infected BattleFleet zords and the base's computers and he awoke to find his head not attached to his body. He was shaken by the revelation to the extent of not thinking he was needed in battle, and Spencer had to snap him out of it by reminding him that, despite his origins and the identity crisis, he was loved. The other Rangers showed support when they found out - as Tyzonn stated, they'd accepted him and he was an alien - but Mack seemed unwilling to forgive his father for keeping it a secret, refusing to talk with him. Tvicon.png TV STORY-Things Not Said

Pink Emerald


In "Red Ranger Unplugged" he had a brief identity crisis, unsure if his hobbies were really his or just programmed into him, though he soon got past this. Tvicon.png TV STORY-Red Ranger Unplugged He is still resentful of his father for lying to him, and by Home and Away Part 2 he had started referring to him simply as "Mr. Hartford" and saying he can't be angry because "androids don't have emotions". Tvicon.png TV STORY-Home and Away

In "Way Back When ", the other Rangers plugged Mack in the main computer to see his memories, so they could find more info about the Jewels of the Corona Aurora. Tvicon.png TV STORY-Way Back When

Mack gets ready to morph for the last time.

In the final episode "Crown and Punishment", Mack realized his father cared for him when Flurious threatened to kill Mack for the jewels, causing Andrew to trade the jewels for Mack. After this, Mack began calling him "Dad" again. Mack uses up all his power in the final battle with Flurious to destroy the villain, but unfortunately, depleting his own power and causing severe internal damage. The other Overdrive Rangers rushed him back to Andrew, who sadly informed the Rangers that the damage to Mack's systems was too severe to be repaired, which means they lost him, and while another android could be built - that android, while it would look like Mack, would not be the Mack they knew.

Mack is dead

The newly-revived Mack is now traveling with his father.

Seconds later, the Sentinel Knight arrived to offer his congratulations, and was perplexed by the Rangers's reactions, until he learned that 'the valiant Red Warrior' had fallen in battle to the Corona Aurora. As he reminded them of the power of the Corona Aurora, Andrew sadly said that it was impossible to bring Mack back to life as he was only a machine, but the Knight mused that Mack had fought with too much heart to be anything other than 'real'. Using the power of the Corona Aurora (placed upon Mack's head), the Sentinel Knight not only revived Mack, but turned him into an actual human being. With Operation Overdrive succeeding in its mission to find the Jewels of the Corona Aurora, and the other Rangers leaving to return to their pre-Ranger lives, Mack is living his fondest wish, and is currently traveling on adventures with his father overseas.

Super Megaforce

PRSM - Overdrive and MMPR.png

Mack and the other Overdrive Rangers returned as part of the army of Legendary Rangers that helped the Mega Rangers defeat the Armada once and for all, fighting in a huge battle against hundreds of X Borgs and dozens of Bruisers. Tvicon.png TV STORY-Legendary Battle

Video Game Appearances

Power Rangers Key Scanner

Red Overdrive Ranger in Power Rangers Key Scanner

Mack as Red Overdrive Ranger, appears in the app videogame Power Rangers Key Scanner, among various other Rangers teams.

Power Rangers Dash

Red Overdrive Ranger in Power Rangers Dash.

Mack along with the other Overdrive Rangers as well among all the Ranger teams which appear in the Korean-developed mobile game Power Rangers Dash.


Mack is an enthusiastic thrill-seeker. He's willing to do anything for his team mates, and is convinced he's always been Andrew's biological son. However, he feels betrayed upon discovering he's an android. When he becomes a real human teenager, he's eager to join his father on archaeological expeditions.

Genetic Power(s)

  • Super-Strength: Mack can lift objects up to several tons, but his strength limit is currently unknown. He can also deliver strikes much more powerful than the average human's. Using his newfound strength, he has lifted many an item, including gigantic boulders, trees, his team, and his butler, Spencer. The Rangers do not seem to be able to use their genetic powers while transformed, though their morphed outfits give them a boost in strength regardless. His "Genetic Power" was in reality an alteration of his android body to allow such strength as he had no DNA to alter at the time. As a result, it is unclear if he retained his power upon becoming human, which would make him the only Overdrive Ranger to not be permanently affected by his service.


Red Overdrive Ranger

Red Overdrive Ranger



Appearances: OO Episodes 1-28, 30-32, SM Episodes 20 & LBEV

Ranger Costume with Defender Vest


Appearances: OO Episodes 7-9, 21, 31

Lucky Overdrive Red

In Out of Luck, Mack donned good luck charms on his costume.

Appearances: OO Episode 18

Red Sentinel Ranger

The Red Sentinel Ranger is the merged form of Sentinel Knight and the Red Overdrive Ranger. Originally designed for Zord technology and too dangerous for Humans, the power-up was given to Mack due to him originally being an android. This ability was lost when Mack became human as it would've been too dangerous for him to use again.


  • Sentinel Morpher: The device that allows Mack to morph into his Red Sentinel Ranger form.
  • Two Gold swords : Red Sentinel Ranger main weapons.

Appearances: OO Episodes 25-28, 29 (flashback only), 30, 32

Morph and Roll Call

Legendary Ranger Devices

The Red Overdrive Ranger Key.

The Red Overdrive Ranger Key is Mack's personal Ranger Key. This key along with the majority of the Core Ranger Keys are seen lining the Command Center's interior walls. This key is mainly used by Troy Burrows (Super Megaforce Red) who uses it to fight as the Red Overdrive Ranger. It has also been used by Jake Holling (Super Megaforce Green) on one occasion so far.

The Red Overdrive Ranger Key translucent.

The Red Overdrive Ranger Key translucent is Mack's exclusive Ranger Key and also variant of the original Red Overdrive Ranger Key. This Ranger Key was never seen in the series and is exclusive by a Legendary Ranger Keys toyline.

Operation Overdrive Dino Charger

The Red Overdrive Ranger is one of the Rangers that represent the Overdrive Rangers for the Operation Overdrive Dino Charger, released as part of Dino Charger Power Pack Series 3 with each charger depicting four pictures. In Operation Overdrive's case, it featured the Red Overdrive Ranger, the Mercury Overdrive Ranger, the DriveMax Megazord, and the Operation Overdrive title. This Charger was paired with the Zeo Dino Charger.

"Legendary Red Star! Activate!"
―announcement in the DX Ninja Battle Morpher

The Red Overdrive Ninja Power Star is a special Ninja Power Star that bears the likeness of the Red Overdrive Ranger and is marked with the kanji for "red". The first version of this star is exclusive to the Ninja Steel toyline while the second version was originally a part of the Super Ninja Steel toyline, but was ultimately never released.

Behind the Scenes



Mack's Helmet in Alphabet Soup in RPM

  • A modified version of Mack's Red Ranger's helmet is seen inside the remains of Alphabet Soup in the Power Rangers: RPM episode Ancient History.
  • While he is not the first artificial Ranger, he is the first artificial Ranger not to be a copy of an existing one.
  • Mack is based on and named after Bruce Kalish's son, Mackenzie.[1]


See Also


Power nav icon.png Power Rangers Operation Overdrive Icon-oo.png
Mack Hartford - Will Aston - Dax Lo - Ronny Robinson - Rose Ortiz - Tyzonn
Sentinel Knight
Overdrive Tracker - Mercury Morpher - Sentinel Morpher - Drive Defender - Double O Zip Shooter - Drive Lance - Drive Slammer - Drive Vortex - Drive Claws - Drive Geyser - Drive Detector - Defender Vest - Drill Blaster - Red Sentinel Ranger - S.H.A.R.C. - Hovertek Cycle - Transtek Armor
Andrew Hartford - Spencer - Vella - Norg - Alpha 6
Retro Rangers: Adam Park - Tori Hanson - Kira Ford - Bridge Carson - Xander Bly
Zords and Megazords
Dump Driver - Speed Driver - Gyro Driver - Dozer Driver - Sub Driver - Drill Driver - Shovel Driver - Cement Driver - Crane Driver - Sonic Streaker - Fire Truck Zord - Rescue Runner 1 - Rescue Runner 2 - BattleFleet Zord 14 - BattleFleet Zord 15 - BattleFleet Zord 16 - BattleFleet Zord 17 - BattleFleet Zord 18
DriveMax Megazord - Super DriveMax Megazord - DriveMax Ultrazord - Flash Point Megazord - BattleFleet Megazord - DualDrive Megazord
Flurious - Chillers
Moltor - Lava Lizards
Miratrix - Kamdor
The Fearcats: Mig - Benglo - Crazar - Cheetar
Others: Thrax
Giant Sea Creature - Atlantis Temple - Ultrog - Weather Machine Monster - Bombardo - Volkan - Big Mouth Monster - Scaletex - Camera Monster - Amplifier Monster - Bullox - Lavadactyls - Top Hat - Blothgaar - Generalissimo - Vulturus - Datum - Garbage Warrior - Golem Warrior - Statue Warrior - Kunoichi Monster - Prince Warrior - Magmador
Robots: Dragonizer - Moltor's Zord - Flurious' Robot - Jet Robot - Commando Robot - Centurion Robot - Cybernetic Rex - Agrios
Red Rangers
Jason Lee ScottRocky DeSantosAuricoTommy OliverT.J. JohnsonAndrosLeo CorbettCarter GraysonAlexWesley CollinsCole EvansShane ClarkeConner McKnightJack LandorsSchuyler TateBridge CarsonNick RussellMack HartfordCasey RhodesScott TrumanJayden ShibaLauren ShibaTroy BurrowsTyler NavarroBrody RomeroDevon DanielsZayto
Rocky DeSantos (movie)BrittJason Scott (2017 movie)Marvin ShihGrace Sterling

Secondary Rangers
Eric MyersHunter BradleyLeanbow
Twin ManJustinRockoFarai JukwaRobo T.J.CrashPsycho RedRed Cyborg RangerEvil Time Force RedLion Shadow RangerEvil ShaneEvil HunterCharlieOfficer TateEvil Red Mystic RangerEvil Red Overdrive RangerMr. ShibaThe Grand ShogunDane RomeroMick KanicRobo Red RangerBlaze

Power Sets
Red RangerRed Aquitar RangerZeo Ranger V RedRed Turbo RangerRed Space Ranger
Galaxy RedRed Lightspeed RangerTime Force RedQuantum RangerRed Wild Force RangerRed Wind RangerCrimson Thunder RangerRed Dino RangerS.P.D. Red RangerRed Mystic RangerWolf WarriorRed Overdrive RangerJungle Fury Red RangerRanger Operator Series RedRed Samurai RangerMegaforce RedSuper Megaforce RedDino Charge Red RangerNinja Steel RedGrid Battleforce Red RangerDino Fury Red Ranger
Red Ranger (1995 movie)Red Ranger (2017 movie)