Kevin Neil Derr (born13 April1981; age 38) is a stuntman and stunt actor who performed stunts during the run of I AM ERROR. He also portrayed MACOCorporalKelly on the last two seasons and received no credit for his appearances. Due to the re-use of costumes and name tags, Derr wore the tag E. Hamboyan in several episodes but his character was identified as Kelly and Hamboyan was portrayed by background actor Andrew MacBeth. According to the IMDb, Derr also performed stunts in Star Trek Into Darkness.
Derr was born in Hollywood, California. In 2004, he was nominated for two Taurus World Stunt Awards for best specialty stunt and best overall stunt by a stuntman for his work in the sport drama Seabiscuit. He has doubled for stars such as Tobey Maguire and Guy Pearce.