A common fan nickname for the awesome character Zaraki Kenpachi from the popular Japanese manga series "Bleach", where Kenpachi is detailed as a transcendental and God-like being, taking out one of the strongest enemies in the history of the Soul Society.

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy