Portraits revealed through your current reading position.
Crawler from the Penis Parade, summoned individually onto Carl's team for the Madness castle assault.
Gluteus Maxx teleports into the staging woods behind the The Madness Castle as part of the diverse mix of crawlers arriving individually after the main Mass Teleportation, identified along with Doctor Bones as being from The Penis Parade.
He is one of the team members Carl had specifically planned on summoning as the force approached the castle, and he holds the shielded treeline until Eris's Chaos Ritual takes the whole line.
A member of Carl's hand-picked assault team, drawn from the Penis Parade.
Also appears in books you've already read — spoiler-safe to their endings: