Lunatic

Lunatic is a ghost of the roster. It has no roll chance because it was removed from the game, and the Sol's RNG Wiki dates the removal to Era 7, saying the aura looked too much like one from another game. The creator is listed as Sol's Studio, and the in-game line describes a dazzling, incomplete aura of variable form that makes anyone who meets it frantic.

The look is glitchy by design. The wiki says it shares features with Undefined: a large glitch mark over the player's face, a bold pink X and a scribbled censor bar. A big star is drawn at the player's feet with lines flashing around it, and an explosion effect fires at regular intervals.

It has a small history of its own. The wiki says it was first shown in a server by the admin xcvbwer123, together with Hallucination and Sirius_unob, and that all three were later removed. While it existed, it appeared in rolls simply as "Lunatic". Since it never reached a normal rarity, there are no odds to calculate.