Isaac O'Rourke was once the second-in-command of a wildcat horde, the Bloodrunners, under Captain Dorian Strykeclaw.
His weapons are a long-bladed claymore with a basket hilt, a dirk, and a Sgian-dubh.
He was exiled from the horde after failing to stop an attack. He speaks with a Highland accent. He has tan fur with dark brown tabby stripes, a tall, muscular build, and dark blue eyes.
Isaac's had a lot of pain in his life, having his own sister, Heather O'Rourke, try to kill him. He lost his beloved wife, Airia, and baby kitten, a season-old girl named Murron, in the same attack that exiled him from the horde.