Bouncer Joe

Bouncer Joe was the 44th character added to the game, 8th premium hero, and the second premium metal hero

Added in update 4.2.0, Bouncer Joes character design takes reference from a cyborg.

He is a health oriented build, similar to the other premium metal hero Mecha-D4me Eva, who also has a robotic design, but can still pack a punch.

Skill tree: Shield

level bonuses:

Level Bonus
10 Damage Resistance +50
20 Damage Resistance +75 (All Heroes)
30 Attack +125
40 Health +350
50 Ranged Resistance +75 (All Heroes)
60 Damage Resistance +100
70 Attack +175
80 Health +12%
90 Ranged Resistance +75 (All Heroes)
100 Damage Resistance +15%

Perks:
Bulletproof: Your skill charge expands to reduce and block incoming damage. Gain revenge as a starting perk
Revenge: Fire a shot at the enemy that hit you.

Bulletproof basically makes it so that the more charged up your skill is, the higher defense you have, causing you to take less damage. On damage, your skill charge is reset to 0, and you take the excess damage, which is much less than before.