|English Name:||Jeffy Adams|
|First Appearance:||Free Arc 1; Comic 5|
|Affiliations:||Dyon's Squadron; World Government|
|Epithet:||" Shaman " Jeffy|
|Name of Fruit:||Sei Sei no Mi|
Jeffy's personality is always joking around rarely ever getting serious unless the situation demands it. He regularly pranks people, some he doesn't even know. He is apparently really close with his Platypus spirit, Derek.
Since Jeffy ate the Devil Fruit, Sei-Sei no Mi, he's been able to see Derek. Jeffy, naturally, first freaked out when he saw a floating platypus in the air but got used to it as Derek wouldn't leave his side. Eventually, the two would develop a close bond and become partners, fighting for the Marines' ideal Justice.