From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Gyoshu (ギョーシュ, Gyōshu) is a member of Slugg's Demon Clan.
When Gyoshu was asked by Slugg how long it would take to "fix" Planet Earth, his answer (10 days) did not satisfy his leader and he was swiftly killed with a Ki Blast. His successor, Kakuja, said he could "fix" Earth in less than half the time that Gyoshu had said (three days).
Gyoshu seemed to have more of a coward-like attitude, while Kakuja had a more serious and evil tone.
Gyoshu is of the same race as Kakuja.