Human Bird Grass is a big monster with the appearance of a carnivorous plant.
His personality is left rather ambiguous, but he seems to be rather impatient and hungers for human flesh.
Human Monster SagaEdit
Monster Raid ArcEdit
Human Bird Grass emerges from the ground with Junior Centipede at a restaurant. Junior Centipede briefly mentions that he is looking for the sponsor of Hero Association. Before they could grab the sponsor, Metal Bat grabs a coat and engages in a fight with him and his partner. Human Bird Grass's corpse is being sat upon by Metal Bat.
|Human Bird Grass and Junior Centipede vs. Metal Bat (Off screen)||51, 54||None||Human Bird Grass is killed|