Hideomi Kuromatsu is a scientist, Nobel Peace Prize winner and Tohto University professor. He was Gorgom's chief scientist in converting humans (willing or not) into various mutants. He also has interchangeable hands for him to experiment on said humans. He uses his Tohto University job as a sanctuary for Gorgom's mutants and as a laboratory for conducting conversions for humans and for Mutant-related experiments. He was later killed off-screen for his failure to eliminate Black and Birugenia briefly assumed his appearance.
Hideomi Kuromatsu is portrayed by Susumu Kurobe, an actor who is the best known for playing Shin Hayata and voicing Ultraman in the Ultra Series.