|Locatie||In Badbeard Lake|
|Eerste verschijning||The Ballad of Badbeard|
Spleen Island is an island located in the middle of a lake named after the fearsome pirate Badbeard. It was the site of Badbeard's booty of treasure until Phineas, Ferb, Isabella, Buford, Baljeet, and the Fireside Girls found it. It also housed Dr. Doofenshmirtz's new evil lair (which apparently got destroyed after Candace hit the self destruct button). to get on Spleen Island, you must sail from "Point Plots", through "Sea of Bile", then throught the "Stones of Gall", and then into the "Cove of Incontinence". after that you can continue on foot into the "Dark Tunnels of Doom". Doesn't that sound delightfull?