Isaac, aka И, is a chubby Russian 8 y/o male letter. His personality is shy, caring, playful, and a bit childish. He likes watching the night sky, talking about stars, moons, and planets, read cute books, cuddle with his blankets and plush toys, and talk to his 12 y/o sister Ylina (Й), and his adoptive bear dad Marcus (М), who cares for them a lot. He doesn't remember anything about his biological parents, but loves his dad М, despite his grumpiness.