|This article is about a/an monster form in Kamen Rider Drive.|
Thief Roidmude (シーフロイミュード Shīfu Roimyūdo) is a Fusion Evolution State of a Roidmude when they synchronized to Mitsuhide Nira. It was originally the advanced form of 106, before he died and Brain took his place, augmenting the form with his own power.
- Thief Roidmude's costume is a modified version of the Voice Roidmude's costume.
- Coincidentally, both Roidmudes perform the criminal act of thieving, as Voice steals a woman's money through his hypnotic voice and Thief snatches an object by moving at incredible speed and invisibility.
- In the early concept art of the Thief Roidmude, when Brain got his Over Evolved, his Fusion Evolution will also become gold and lack the nameplate.