Thought there are no pure Ainus left, since allot of them assimilated, and breed out with the Yamato-Japanese, while the Ainus of Far-East Russia had breed out with the Mongols.
Ainus have thick eyebrows, broad wide nose, thick lips, round eyes, lots of facial hair(along with being hairy like a chimp), and have chocolate brown skin that is darker than Filipinos.
Ainus are a Northern Jomon Tribe.
The Jomons had breed out with the Yayois from Siberia(Ancestors of Today's Japanese).
Not to many Japanese have Ainu, or any Jomon blood, mostly Hokkaidoans, and Okinawans do.