Lucubra

Lucurbra is one of the villians of The Flame Keeper's Circle, other than the Esoterica.

Powers and Abilites
A Lucubra has the ability to feed on the thoughts of humans. Donntello states that it feeds on the part of the mind used to pray or meditate until there is nothing left of the victim's mind. The victim then becomes its obedient servant, evident by the turquoise eyes, which it is implied it can control from other dimensions.

The Lucubra is very durable, being able to take hits from the Forever Knight's weapons, Donnotello's attacks, Raphialle 's attacks and Leonardo's attacks with no visible damage at all.

Lucubra are strong enough to knock one of the knights away with little effort.

Lucubra can fire a powerful laser beam from its face and climb walls.

Physical Appearnce
A Lucubra has a green and gray gelatinous body with red teeth like markings in its body, resembling some kind of lizard. They use tentacles to feed on its victim's thoughts and uses them to communicate with others, once a person has been fed upon, the Lucubra can send them commands telepathically.

The Lucubra seem to range in sizes, one being as large as a dog, while another was several times larger than a human.

Weakness
A Lucubra can't take over beings if their cranium is protected by certain types of materials like iron.

The Lucubra can be contained through magic.