Jelfonzo is a character in Splatoon 2. He is a Jellyfish who operates Ye Olde Cloth Shoppe.

Jelfonzo apparently "split" off of Jelonzo, the Jellyfish responsible for running Jelly Fresh, Ye Olde Cloth Shoppe's equivalent in Inkopolis Plaza, and therefore could be considered Jelonzo's son. He studied the Inkling language through ancient texts, thus adapting fairly outdated terminology (as demonstrated in the name of Ye Olde Cloth Shoppe). Despite this, he is still up to date with the freshest trends.

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