The Command Centre Bomb

The Command Centre Bomb was an essential element in the ending saga of Mighty Morphin Power Rangers and a crucial reason for the events of Power Rangers Zeo.

History
The bomb was first introduced as a way for Rita and Zedd to finally destroy the Power Rangers after the defeat of the Barbaric Brothers. The Command Centre was inaccessable by usual means but villains could access it by going into the catabombs under the base and teleporting in. It was given to Goldar and Rito to plant under the Command Centre to destroy the Rangers once and for all.

It appeared with them amongst the following episodes when they trudged along under the Ranger base,

The bomb finally came into play during the final two part episode of the series when Rito and Goldar were able to plant the bombs under the base whilst the Alien Rangers had to deal with the Hydro Hog. Having planted them, the duo went into the main control room and stole the Zeo Crystal before leaving. The bombs then all detonated which destroyed the Ranger base and supposedly killed Alpha and Zordon although the Rangers escaped. The mentors were later revealed to have survived however.