Fennel is a fallen seraph who once hailed in service of the sun. He takes the form of a cat with a few nightmarish features, such as horrifically long claws, curved horns that can grow anywhere from his body, and the ability to cry and bleed out ichor. The name Fennel is only his current life's alias; his true name is known only to few.

Fennel maintains a relative disguise to hide his true nature. In his anthro form, he is a roboticist and university professor - he teaches Introduction to Computing Systems, as well as Kinematics and Mathematical Foundations.

Fennel, despite what he may think, is as pure-hearted and good as they come. He relentlessly dedicates himself to others, placing his own desires on the back burner in order to be a pillar of stability to those he cares about. On a surface level, Fennel seems to be well put together - he is optimistic and always willing to help out, and as a result he tends to be well-liked enough, but deep down, he is indescribably lonely.

Fennel believes his burdens to be too heavy to place upon others in good conscience, including not just that of his true nature, but even his day-to-day strife. Even when he desires a deeper connection with those around him, Fennel cannot open up about the horrors inside of him. He greatly fears that he has a darkness inside his heart that will one day cause him to lash out and hurt the few people he has left in his life - he has fallen once before, and fears irrationally that he could cross a line if he is not constantly mindful.

Fennel has fully accepted that he is destined to be alone, as no one will ever fully know or understand him - but that doesn't mean that the loneliness hurts any less. Still, he faces life with great optimism and a smile.

Fennel takes the disguised appearance of a house cat or lion with the horns of a sheep or goat. The growth of his horns is a physical manifestation of his repressed self-loathing. Fennel is often polycerate, meaning he has multiple sets of horns. They can grow from anywhere on his body and will also grow continuously if he does not cut them off. Growth outside the area of the skull can be quite painful, especially when from the neck and abdomen. When his horns begin to grow in excess, he will remove them surgically to preserve his appearance, and any wounds will heal up by the next day.

Fennel may sometimes be depicted with a woolly lion's mane with hair that darkens at the tips, but usually he will shave it off. He has a long, whip thin tail that ends in a wispy tuft of fur, and ears that are distinctly wide set. He has long, thick black claws that are sharp like obsidian, and though he will file them down, they grow back within hours. In some cases he will declaw himself, amputating the last phalanges to remove the claws entirely, however his fingers and the claws will grow back over a few days.

Fennel can have up to four sets of feathered wings. The pair furthest up his back are large, whispy, and white, and grow smaller and darker with the lowest pair being very small, near pitch black, and dangerously hot to the touch. All are seldom seen at once as each pair sits on a separate plane of existence, allowing them to clip through one another. His wings are attached to his more abstract ‘true’ seraph form, which is imperceptible by mortals in most cases. In several thousand years his wings will grow large enough to cradle the Earth.

In anthro form, Fennel is quite tall, standing at 5'11". He is ambidextrous but favours his right hand.