About Sigma
The third member of Mach Storm, Sigma is older than RD, is rather cocky and argumentative, and tends to look down on RD. Despite this, he is a capable pilot. He usually provides fire support for the team with his Boldguard, whose cannons have been modified to fire various weapons (including the 'capture rings' used to immoblise wild Zoids). After the Boldguard was destroyed, it was replaced with a new Leostriker.
Later in the series, Sigma and Helmut's Zoids gain the ability to fuse into the Command Striker. For some reason, the Command Striker was never utilized in the final battle against Alpha. One has to wonder if the Command Striker could have held out longer against the Berserk Seismo's Sword Rail Cannon than the two Zoids separately.
Source: Wikipedia
Anime Appearances
Voice Actors
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Sigma
Katsu, Anri voices Dolcetto here
Fullmetal Alchemist: Brotherhood
Katsu, Anri voices Fujieda, Naoki here
Nana
Katsu, Anri voices Yamazaki here
Major S5
Katsu, Anri voices Kamaishi, Taku here
Case Closed
Katsu, Anri voices Kenzou here
The Prince of Tennis
Katsu, Anri voices Tierno here
Pokémon the Series: XYZ
Katsu, Anri voices Enji, Koma here
Tokyo Ghoul
Katsu, Anri voices Oboro-guruma here
Hozuki's Coolheadedness
Katsu, Anri voices Tonomachi, Hiroto here
Date A Live V
Katsu, Anri voices Tama, Hideki here
Evangelion: 3.0 You Can (Not) Redo
Katsu, Anri voices Cainz, Drocell here
Black Butler
Katsu, Anri voices Basel, Dylan here
Soukyuu no Fafner: Dead Aggressor - Exodus Part 2