Moully first entered the Bee and PuppyCat show in the episode titled Donut where he is portrayed as a diligent worker, crafting donuts on the Donut Planet. The storyline assigns Bee and Deckard the task of overseeing Moully, who is endearingly tagged as crazy. Moully embodies kindness, generosity, and humility. Even though he spends his days crafting treats for strangers, he expects little in return. This altruistic nature becomes evident when, despite Bee's minor act of bandaging his injured finger, Moully feels deeply indebted. A fanart Bee and PuppyCat cursor with Moully and Rolling Pin.