Subtitle: Soundwave Monster (音波怪獣 Onpa Kaijū)
- Height: 68 m
- Weight: 73,000 t
- Origin: Cyberspace
Denkou Choujin Gridman
A hunchbacked reptilian creature with a neck frill and two long spikes on it's shoulders that was dwelling inside a keyboard. It lives alongside an inhabitant of computer world in form of a girl named Unison AKA Spirit of the Sound. After Anosillus destroyed Bagira, Takeshi Todo attached a keyboard to his computer and used music to brainwash Anosillus. With Anosillus under Khan Digifier's power, ear-piercing sound waves were emitting from the keyboard and slowly spreading throughout the city. Gridman was ready to destroy Anosillus with the Barrier Shield, but Unison appears pleaded Gridman to cease. She attempted to free Anosillus by playing a melody, but Takeshi's music was too strong. Yuka attached her own keyboard to Junk and played a melody powerful to break the spell, restoring Anosillus.
- Anosillus' suit would later be used as Imitation Anosillus.
- Anosillus is the only Kaiju in the series to get an imitation form. Almost all others received Mecha forms.
- Anosillus is similar to the monsters in Ultraman Cosmos because it was turned evil by the main villains but it is mostly similar to Golmede as it had an imitation of it created.
Powers and Weapons
- Sonic Blast: Being based on a sound program, Anosillus can fire sonic blasts from his mouth and horns.
- Fixer Breath: Anosillus can breathes particles that can restore the damage on computer system similar to Gridman's Fixer Beam.