Kaijuu No. 9 is a very powerful Kaijuu. It can transform itself into a human form, appearing as a tall man with slicked-back hair and a blank expression. While in human form, he manages to infiltrate Monster Sweeper Inc., the cleanup crew that Kafka and Reno had previously worked at. It is cold and does not seem to have much emotion, with its only desire to achieve its goals. It possesses many abilities, including Super Speed, Super Resilience, Shapeshifting, Projectile Firing and Kaijuu Resurrection.