Yellow is a Pterodactyl-type monster/mascot and member of the Rainbow Friends. He isn't very intelligent, kind of a 'himbo', sometimes a daredevil and generally has a positive attitude. Might have some bird or chicken-like elements to the voice. Can use some light voice effects to achieve a more 'monstrous' type sound, similar to the character of Blue in this video https://youtu.be/gshMJYmKEOU