Doomguy

Doomguy is a boss that wields a Heavy Cannon that fires at players non-stop when at a close enough range, he can shred players that use nothing but garbage weapons like SMGS.

He also wields The Crucible which if you get hit sets you on fire which lasts pretty long, using the Epic Katana will help you survive the constant burning damage.

Using weapons that can freeze him are recommended as he can run down players faster when he's moving which can allow players to take out chunks of his health at low health, he of course gets additional speed which is troublesome for isolated players but not as much of an issue for groups. (especially those people in Toyotas that basically try to kidnap you)