Lincoln and the Louds are ecstatic to welcome their new Gran-Gran, Myrtle, into the family with a tropical wedding celebration; but the festivities are cut short when an old nemesis from Myrtle's secret agent past appears on the island.

Bentley Griffin

Lincoln (voice)

Alex Cazares

Myrtle (voice)

Piotr Michael

Pop Pop / Boat Henchman / Karaoke Patron (voice)

Brian Stepanek

Dad / Todd / Cargo Shorts Henchman (voice)

Amy Sedaris

Fifi (voice)

Jessica DiCicco

Lynn / Lucy (voice)

Lara Jill Miller

Lisa (voice)

Jill Talley

Mom / Computer Voice (voice)

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