From the 6th movie... "EVERYBODY DO THE FLOP!"*whump*
After a long absence, the I Like Trains Kid finally returns in episode 9 (granted it's a voice only cameo, but still).
On August 14, 2019, TomSka announced his upcoming asdfmovie-themed card game, Muffin Time. In less than 12 hours, the game's Kickstarter had already made over twelve times its goal and counting. If that's not a loyal, dedicated fanbase, nothing is.