Milky

Milky is the oldest currently existing Robinverse character. His numerical age is unknown, but he's existed since before the forcewielder, Robin, was even born.

Important Interactions
He was the one that sought Robin out after the Reset and told him about how he was supposed to be the forcewielder.

Since then, he's supported Robin. When Robin's Warriors were founded, he was one of the first Head Robin Warriors.