Fortis

Fortis and I are close, like, he's a demon I can have a drink with any time. Great Grandpa created him and his brothers to guard the Underworld from any soul dumb enough to attempt escaping.

Despite his single head, he's actually a cerberus demon. Anyone who dares to point that out would be punched into next week.

His greatest passions are working out, getting others to work out, and his brothers. Heck, sometimes I've been so unlucky to have been roped into his cruel training regiment.

Ugh, it's already exercise just from evading him during his workout highs.

- Kobu's journal entry on Fortis