The Blockboy is KoGaMa's original default avatar (not counting the original robot avatar from closed Alpha), and is currently one of six default avatars available to those creating a new account.
The Blockboy, as seen in the Signup area of the KoGaMa website
It is notable that the original Blockboy avatar had various mistakes, including sand under his chin, a hole in the bottom of his trousers, and a block on the side of his head. The current Blockboy avatar only appears to have one obvious mistake, which is a miscollered spot on his trousers. It is also notable that the Blockboy is usually seen with a large smile, while the actual avatar doesn't have a mouth at all. A Blockboy avatar was used to be purchased for 275 Gold cubes, now It's purchased for 140 Gold cubes, even if the user didn't select the character as their default avatar.
Also this is a new block boy setup in the sign-ups, The sign up area were updated in 2020 and selecting your avatar using the arrows. The new style of BlockBoy is slightly better than the old one, Blockboy in Kogama was updated in April 2018 because the avatar is kind of silly. He costs 140 Gold cubes when you buy your first avatar and it's still a default avatar. It's one of the most popular avatars on Kogama and can be found in games, avatars, and sometimes models, If you really hate wearing this avatar, You will need Level 8 most likely to buy your first avatar.