|This article is about a/an voice actor for several series in the Super Sentai series.|
However, he is more known for roles within various anime series, most notably Domon Kasshu in G Gundam, Sousuke Sagara in Full Metal Panic!, Meito Anizawa in Anime Tenchou, Van Fanel in The Visions of Escaflowne, Chichiri in Fushugi Yuugi, Gilgamesh in Fate/stay night, and Suneo Honekawa in Doraemon.
He is well known for being a Tokusatsu fan.
In August 2012, Tomokazu Seki appeared as a guest star on the web radio spin-off Hikonin Sentai Akibaranger Official Web Radio (Temporary).
- Chouriki Sentai Ohranger (1995) - Prince Buldont
- Gekisou Sentai Carranger Ep. 19: The Hit-And-Run Girl In Love! (1996) - HH Deo
- Denji Sentai Megaranger (1997-98) - Bibidebi
- Tokusou Sentai Dekaranger Episode. 20: Running Hero (2004) - Guermerlian Byz Goa
- Kaizoku Sentai Gokaiger (2011-12) - Narration and the voice of the Gokaigers' equipment. And also voiced The Greatest Treasure in the Universe.
- Hikonin Sentai Akibaranger (2012) - Tsukishimaalpaca, Asakusaalpaca, Guard at Toei
- Hikonin Sentai Akibaranger Season 2 (2013) - Male Past Sentai Warriors, China Red, TyrannoRanger
- Shuriken Sentai Ninninger (2015) Yokai Nekomata, Yokai Mataneko
- Doubutsu Sentai Zyuohger (2016)
- Uchu Sentai Kyuranger (2017) Space.7: Take Back the Birthday! - Space Ikadevil
- 4 Week Continuous Special Super Sentai Strongest Battle!! (2019) - Gaisoulg
- Kishiryu Sentai Ryusoulger (2019) - Ryusoulger Equipment, Gaisoulg
- Kishiryu Sentai Ryusoulger Final Live Tour 2020 Story CD - Ryusoul Moria