I got some ideas for some Mika's classmates, lately ive been watching anime to get some ideas for the intro but that is another topic, so i got some ideas while watching one:
Fristly it would be a good idea a white normal puffle that talks in a serious accent... or a 7 year old penguin that creates robots (for fun) that is childish and loves sleeping, another thing could be a penguin that is very exaggerated or an awkward coffee shop worker.. Those are some ideas that i got lately.. hope you like them :P