So let’s get this out of the way, the script says Lil’ Cheese is a colt, but many people see them as a filly, so they ended up being non-binary in my headcanon because I couldn’t decide their gender (but go with whatever suits you better).
 
“Don’t worry, Zap and Cheese got another infallible plan”. Cheesecake, AKA “Lil’ Cheese”, is first and foremost known for the ability to talk their ass off anytime of the day for whatever reason (they used to spend most of their time besides their mom, so no need to mention that they practically picked up all her goofiness and energy by osmosis), they’re also an excellent actor and are known as “The God of Puns”. They’re generally a popular and gifted student, however, they’re foul-mouthed and kind of competitive (but despite that, they are generally well liked and always looking after their friends). Lil’ Cheese uses their innate talent for comedy and natural charm and charisma to help attract attention to their mum’s bakery. Cheese had pretty deep random conversations with Pinkie since very little, so they turned out to be a pretty good conversationalist and improviser.