Sentry Buster 2.0 is a mini-boss of Mann vs. Machine in Team Fortress OSC.
It is a red and larger version of Sentry Buster.
When spawned in, it will targeting engineer and blow their sentry, dispenser and teleporter up with the huge explosion.
When the mini-boss defeated. It is exploding and bursting out of head within a malfunctioning then falls on ground to self explosion.