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Phineas and Ferb invent a time-travelling pocket watch and invite ‘Descendants’ star Kylie Cantrall on an adventure through the ages when a wooly mammoth crashes the party.

When Phineas and Ferb welcome Xochitl Gomez to their backyard to test out a new batch of superhero serums, Xochitl finds herself battling ninjas with a rather odd superpower.

When Phineas and Ferb invent high-tech sneakers called “copycat shoes,” they bring in Avantika to test them out in an attempt to transform Ferb into a brilliant dancer!

Desperate to bust her brothers once and for all, Candace teams up with social media star, Brittany Broski, to livestream Phineas and Ferb flying a real-life dragon!

When Phineas and Ferb cartoonify "Percy Jackson" star Walker Scobell, he's excited to test out a lazy river the boys built. Just one problem: it's actually a CRAZY river!

Inspired by Mark Rober’s infamous squirrel mazes, Phineas and Ferb shrink Mark down to the size of a squirrel then have him race an actual squirrel in a daring obstacle course!

Phineas and Ferb welcome LeBron James and his daughter, Zhuri, to their backyard to attempt an insane basketball trick shot they invented called the 300-Pointer.