Synopsis
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.
Cast

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)

John DiMaggio
Mr. Grouse / Flop / Henchman Mo (voice)

Grey DeLisle
Lola / Lana / Lily (voice)

Paul Wight
Ham Hand (voice)

Catherine Taber
Lori (voice)

Chester Rushing
Owen / Guard 1 (voice)

Jaeden White
Clyde (voice)

Sarah Niles
X (voice)

Nika Futterman
Luna (voice)

Dan Fogler
Dr. Dufus (voice)

Cristina Pucelli
Luan (voice)

Liliana Mumy
Leni (voice)

Khary Payton
Harold (voice)
Griffen Campbell
Additional Voices (voice)

Ryan W. Garcia
Additional Voices (voice)

Jake Green
Additional Voices (voice)

Keston John
Additional Voices (voice)
More like this

The Loud House Movie

LEGO DC Comics Super Heroes: Justice League - Attack of the Legion of Doom!

Stitch! The Movie

Spy Kids

The Flintstones and WWE: Stone Age SmackDown!

Ron's Gone Wrong

Mulan II

Two by Two: Overboard!

Tom and Jerry & The Wizard of Oz

Curious George: Go West, Go Wild

The Willoughbys

Marvel Rising: Playing with Fire

The Rugrats Movie

Spies in Disguise

Hey Arnold! The Jungle Movie

Big City Greens the Movie: Spacecation

See Spot Run

Clifford's Really Big Movie

Hey Arnold! The Movie

LEGO DC Comics Super Heroes: Aquaman - Rage of Atlantis