|Japanese Name||非情式 レク|
|Romaji Name||Hijō-shiki reku|
|Location||Pitch Black World|
|Affiliation||Pitch Black World|
|Relatives||Roc Hijohshiki (Brother)|
Lec has race-less white skin, brownish-gray hair tied into a low braid with a red bow at the end of it. His bangs cover his eyes. He wears what appears to be a lab coat, that has six silver buttons on the middle, with white striped black trousers and dark gray shoes, he also wears a doctor head mirror with a silver crest instead of a mirror, black gloves, and gray dress shoes. Like Roc, he also has two pointed tails.
Lec appears to be calmer than his brother Roc, and is very knowledgeable, working as a doctor. Though curing diseases and fixing injuries are his specialty, he prefers to cause disease and injury. He is said to be the only one who can stop a rampaging Roc.
Not much is known about his past.
Up to this day, Lec has only appeared in some of Deep-Sea Prisoner´s illustrations.
Roc is Lec's brother. It's slightly implied that the two have a rocky relationship since he was once depicted eating Roc, but he still helped examine Lobco for him. Lec is the only one who can stop a rampaging Roc.
Satanick is Lec's boss.
- His name means Cruel Method / Ruthless Style (Kure (end) backwards).
- Roc and Lec have right and left motifs, respectively (Roc being right and Lec being Left). In Japanese, a common method that is taught for learning right from left is that the kanji for both include a hand "holding" something. 右 Migi (Right) holds a mouth 口. 左 Hidari (left) holds a symbol that means craft 工. With Roc his hand has a mouth on it due to the play on words, whereas Lec means that he is crafty.