There's nothing to indicate that it's anything but a placeholder image. Mirembe and co. have names and have appeared in actual material, Widebeast hasn't. Same reason all the other characters in the short aren't automatically given canon status. Same reason cut heroes like Helio aren't automatically assumed to be characters, even if their images were re-used.--Hawki (talk) 11:01, 27 June 2018 (UTC)