Kurgan

Kurgan was born in a rare tribe of multi-armed people. Their characteristic is having more arms than normal, but even in their tribe, having eight arms was rare. In his youth Kurgan managed to raise his clan's status and protect their land from a Vollachian lord who sought to claim it which started his world renowned exploits. He rose in strength to become the Vollachian Empire's strongest warrior, achieving legendary status tantamount to receiving an order of merit from the Vollachia Emperor himself.

Around 40 years ago, Kurgan took care of Stride and rescued him from almost dying due his sickness. Since then he started to act as his bodyguard. After this event, Wilhelm fought against Kurgan several times at Picoutatte and won, succeeding in cutting off two of his eight arms which were later likely reattached between their encounters. He was eventually defeated a final time by Wilhelm and lay dying on the streets of Picoutatte until Volcanica's miracle healed him. Having survived Kurgan was then extradited back to the Vollachian Empire.

Kurgan was later killed by Regulus Corneas when he attacked Garkla. However, after his death, he was revived as a puppet to fight for the Witch Cult. During Arc 5, both him and a revived puppet of Thearesia van Astrea appeared at the battle for Priestella. Eventually, his corpse was killed by Garfiel Tinsel.

(Source: Re:Zero Wiki)