Mastermind, better known as the Noob Leader is the main antagonist of Dummies vs Noobs' Mastermind gamemode & a playable character that controls the battlefield in varying ways. On Wave 10 they are summoned in with a Chassis mech. A competent Mastermind is considered the hardest boss in the entire game, borderline impossible depending on how much the Mastermind holds back.

Mastermind has a assault rifle, Aerorig and a machete.

If mastermind's chassis is down, He will reveal himself.

Attention protection teams of Stronghold 5-5; the Mastermind is now in control of the mechanized chassis unit.