[quote=@Silver Fox]
<Snipped quote by Invisible Man>

Still, his name is Jack xD

"Hey Jack how are you?"

guild Master Jack- Hey Im good

Joshua's Jack- "..."

"No I mean Froggy Jack!"

Good thing Karn just nicknames everyone. XD
[/quote]

I feel like my Jack would just somehow gather all the Jacks together just to make that joke. Although, if it gets confusing you can call him Jester as well, he wouldn't mind.