Sou Otogiri is an alias used by Phylloxera Worm that assumed the form of Souji before losing his eye to him as Kabuto. As Sou Otogiri, he is an Mobile Squad Leader of ZECT fights by transforming into Thebee. Hated Kabuto for the injury in his right eye during their fight, developing the Clock-down system that will inhibit the clock-up, leading the Kabuto Capture Operation by pulling Kabuto back into the normal time. Later, in episode 30, a copy of Phylloxera Worm was recreated by Super Apollo Geist by combining Worm.