-> Heroes with DoT (Damage over Time).
Psychopath is the best DoT Tank with high magic resist, his Ultimate can stun the Robot Fighter and cancel his Ultimate.
The Robot Fighter is weak to silence and stun skills.
Most of his attacks are magic, so Heroes with high magic resistance are in advantage.
Nymph of Sea
Silencer (disable boss magic attacks)
Disease Bringer (Damage over Time and summons Tank)
Psychopath (best DoT Tank, highest magic resist, Ultimate can stun and cancel the boss Ultimate)
Top Teams – Robot Fighter
Difficulty 6 Teams – Robot Fighter