Carl Islands

Carl Islands is one of the Numbers of Rebellion and one of their most important members. He was revealed to be the father of Abraham Carter, in actuality on the side of the Union.

Appearance
Carl is an old bald spectacled obese man who is dressed in a white doctor robe

Personality
Clar's personality traits are unknown, but most likely shares the Rebellion's ideals. Though Ikki implies that he may a liar and unfair as the paintings, which Sara sold were worth a lot more than the cost of her operation meaning that she could have paid off her debt and wouldn't have needed to join Akatsuki. This is soon revealed to be false as he's using both the deal between the League and Union to turn the latter into the enemies having maintained the existence of the Tyrant instead of revealing that he died a long time ago.

He is highly sadistic, having both Sara and Rinna tortured in front of Kouzou using the illusion forms of two flame users damaging their mind and soul. Befitting his title as the Grand Professor, Clare is a madman seeking out test subjects to research supernatural powers, not caring about the ideals of justice that the Union seeks and instead desires to authority over the people from the war criminal countries.

History
At some point, Clar was asked by Kouzou Kazamatsuri to treat his adopted daughter Sara's brittle bone disease. Sara wasn't completely healed but she obtained a body that could at least move.

Night of Massacre
When Rebellion's headquarters were destroyed by Or-Gaule, and his followers, Clar was not present. Carl is also mentioned being one of the only three people in Rebellion who know Tyrant's location.

Abilities
Biology Manipulation: Though, unconfirmed, Carl has shown to be able to mutate the cells of others.

Master Doctor: Carl is an extremely skilled doctor even curing Sara of her illness.

Equipment
Unnamed Gun: His device takes form as a flesh-colored gun.