I believe that the CGI character is a member of the Sakaaran Rebellion, originally led by Korg in Thor: Ragnarok. Some members of the rebellion were killed while fighting against the Berserker army on Asgard, while others were killed by Thanos and the Black Order during their attack on the Statesman. However, a few survived and settled on Earth to create New Asgard. The audience definitely knows that Korg and Miek survive. Two other possible survivors that we know are Biff and Tasba.
Biff is the character in the lower image. Tasba is the purple character seen in the bottom left of the top image. They do not have confirmed deaths, so it is entirely possible that one of them is the character in the scene. However, Biff appears to be a human in a suit, so it is unlikely that it is him.
Additionally, the character could be the black character with blue paint featured on the right of the top picture, who is clearly computer-generated and fits the stocky build of the character in the scene.