I draw Flab Slab as a gentle-giant obese Caveman with my styles.

Flab Slab as a adult and become good behaviour to seeing Fred Flintstone, he awkwardly apologizes for his bad behaviour from he was a boy, admitting he’d been a jerk because his former friend Rocky and his gang. Fred kindly accepts his apology by he knows something about being a jerk himself.

Flab Slab from The Flintstone Kids https://flintstones.fandom.com/wiki/Flab_Slab