Ray

Ray is a personality core that first appeared in Meet the Cores 2. His character may be based on a quote by GLaDOS where she mentions she was doing tests on sharks, but it is assumed she abandoned the project and left it to Ray. This is hinted at when Ray says, "It was one of GLaDOS's old ideas that never saw the light of day." He also claims that the project was also abandoned because of animal welfare and "other reasons," which can be guessed but are never formally hinted at.

Ray has a similar attitude towards the sharks as Space Core has with space. He is obsessed with doing tests with said sharks, lasers, and lasers on the sharks. It's unknown what tests he's preforming on the sharks, but he loves doing them nonetheless.

Trivia

 * 1) In Meet The Cores  3, he says he has 7 sharks when he calls to ask if the badge buffer, a item that was introduced in the begining of the episode, can buffer sharks, but the person on the other side of the line abuptly hangs up on him.
 * 2) Ray has a relationship with Space Core and misses him.
 * 3) Ray is never seen out of the room, supposedly because he's tending to his sharks.
 * 4) Ray is voiced by Gregory James Holgate
 * 5) seems that ray {like space core is obsessed with space} is obsessed with sharks
 * 6) some think ray is like space core's twin, but intrested in something different and the "oh if only space core was here to see this!" partly supports this theory