It was revealed in SMG4: Meggy's Bootcamp that Kenji and Sam have left the team, with Luigi and Tari replacing them (Heavy Squid was replaced by Mario after he accidentally killed him), making it a group of humans instead upon Meggy's change of appearance from an Inkling to a human after the events of SMG4: Final Hours.
The Splat Squad appears in SMG4 Movie: Meggy's Destiny where Meggy and her team play against the Team Killer Ink and other teams during the final splatfest in Desti's memory. After the final round of the turf war, the Splat Squad won the final Splatfest.
For the first (and last) time in Splatfest history, this the first squad to be only made up of humans! Led by Meggy Spletzer, this team is unpredictable and unorthodox (and overweight in Mario's case).