Kalin was formerly leader of his own gang The Enforcers which consisted of himself Yusei, Jack, and Crow. Before the events of the series Kalin was imprisoned and there became part of the Dark Signers bearing the Giant Mark. Kalin uses an Infernity deck whose strategy is keeping his own hand empty. His ace monsters are Infernity Doom Dragon and Earthbound Immortal Ccapac Apu.
Raid Duel - The Flame of Vengeance: Ccapac Apu! Event
Immortals Offering Reveal 1 to 3 "Earthbound Immortal" monsters in your hand. Then, play "Ceremonial Token" equal to the number of cards you revealed. You cannot Normal or Special Summon monsters, except "Earthbound Immortal" monsters, on the turn you use this Skill. This Skill can only be used once per Duel.
I'd imagine we'll get Black Salvo as a box UR/SR at some point like Debris Dragon, it's pretty similar power-wise. (It's less restrictive, but also less splashable.) I don't see Konami really wanting a lot of his other cards in Duel Links anyway, though. A lot of burn cards that'd be pretty strong in Duel Links, the whale's a pretty big stall card, etc.