Zass is an agent under M.A.T.A. Training Academy. He classifies as an INVISO Agent, and his team is composed of Bulat, Chris, and Roza. And, he is the only character who doesn't release any voice due to him being mute. He loves to listen to music with his headphones. M.A.T.A (Meta Advance Tactical Agency) is an intelligence agency in Cyberaya that was established secretly to protect the security of the city. There's many roles such as "Neuro", "Combat", "Tekno" and "Inviso".