I had this ridiculous theory when they introduced the sweet commanders as well urouge took down was snack
it's very ridiculous but fuck it Perospero is the former sweet commander snack.
Perospero has a candy theme amd the term snack is used to defy a non sugary candy and junk food as well as sweets and sweets are candy.
Perospero is the eldest of the siblings so he presumed to be highly experienced and have the highest form authority below big mom or even the same authority or above of big mom because who would be in charge while big mom is on her tantrums/eating disorder.
Big mom even but him in charge of caesar who is highly important for Big mom's dream.
It wasn't even confirmed if snack has died they only stated to formerly have four sweet commanders. perospero might be even the ruler of the sweet commanders because sweet is also candy.