Eastlaird is a nod to the creators of Teenage Mutant Ninja Turtles, Kevin Eastman and Peter Laird.
One of the movie artists, Laura Gille, started as just a fan of the TV series the movie was based on. It wasn't until JJ Conway (worked of the 2018 series) mistook her fan animation as a lost/cut episode of the show, that she was hired to work on the movie. Not only did her amazing talent land her the job, but she also landed number three on the "story artists" section of the end credits.