Appearance

Physical Description

When taking over Fionna Shadowfang's body, her eyes start glowing and her hair floats on its own, most likely from the magical power Fionn emits.
When switching, usually he takes the hair bow Fionna Shadowfang uses and wraps it on his wrist.

Special abilities

Fionn has the same abilities as Fionna Shadowfang, but he seems much more proficient in just about everything combat-related.

Mentality

Personal history

Fionn has been with Fionna Shadowfang for as long as she remembers having awakened to magic. She believes he's the source of her powers.

Accomplishments & Achievements

Fionn seems to have a natural talent for battle, both physically and mentally.

Morality & Philosophy

Fionn seems to have no moral boundaries, showing no remorse in killing those he deems unfriendly.

Known Languages

Common

Personality

Motivation

His only known concern is that he wants to keep Fionna Shadowfang safe from harm.

Social