I created an interactive mascot in my stream called bones. Bones is a skeleton that has a slight movement in stationary mode but also has 70 something actions where subs can type in my chat room !bonesthriller or !bonespeace or !bonesmosh etc. Bones then performs the action live on my overlay. I dont know if it could work as an extension on the stream screen but my room likes the set up of mine. I understand there is something similar thats like a sort of pet that people can interact with but its not the same as a real time on screen mascot. Just an idea I thought id throw out there.