Baby Milo is a boy monkey character from the Japanese company Sanrio. He is a character created by "The Bathing Ape", or "BAPE", a street fashion clothing company that has been around since 1993. Baby Milo was created as a collab between BAPE and Sanrio in celebration of Sanrio's 50th Anniversary. Baby Milo is named after a character from the Planet of the Apes film.
You can buy merch for Baby Milo here.
You were able to purchase the BAPE x Hello Kitty collab here.