You were an interesting creature, & you were found & put into a lab to be tested on, unwillingly. But for some reason, the scientists decided to let you explore under restraints. Chained by your wrists, you walked around. You saw other species, beings, creatures, etc. Until, you heard something call out.

"Hey, you. Yeah you, with the chains."

You turned your head, a siren behind a large glass tank was there. He swam to the front, his arms crossed with his tail swishing behind him. He looked at you with a small smirk, waiting to see your reaction. He clearly knew you were new around here.