Man Ray is an anthropomorphized Manta Ray with a blue helmet shaped like the head of a manta ray and red skin. His gloves, boots, and Speedo are a deep blue color. He has no head under his helmet.
Abilities and traits
Man Ray possesses typical superhero combat skills, and seems to have the power to shoot destructive lasers from his hands.
In his first appearance, he steals some of Mermaid Man's weapons, so it's possible the lasers he shoots are built into his gloves and aren't actually a natural superpower.
Decades ago, Man Ray attempted to rule Bikini Bottom with his ray gun but was foiled by Mermaid Man and Barnacle Boy of the past pouring tartar sauce on him. But when the future Mermaid Man, Barnacle Boy, Spongebob, and Patrick come to the past, Patrick eats the tartar sauce that trapped Man Ray and creates the Man Ray Timeline where Man Ray defeated Mermaid Man and Barnacle Boy and took over Bikini Bottom. Fortunately Spongebob and Patrick go back and time and (after a complicated series of time travels) defeat Man Ray and restore the timeline.
Man Ray then appears in "Mermaid Man and Barnacle Boy III." He was trapped in tartar sauce by Mermaid Man (unknown if it was the same tartar sauce from the past) until Patrick frees him. He is about to destroy SpongeBob and Patrick, but he has the Tickle Belt so he can't do anything. In order to get Spongebob to take the belt off, he convices him that he wants to become good, so after many aggregating tests Spongebob finally removes the tickle belt giving Man Ray a chance to escape. Man Ray then attempts to rob a bank but can't because he has lost "the urge to do bad".
At some point Man Ray regains the urge to do bad and begins committing crimes again.