Warner Bros. 100th Anniversary

Barely any of the cameos outside of Gizmo, Yogi Bear and Daffy Duck have any dialogue or any kind of involvement in the storyline outside of being used for small jokes (this is an issue that affects most of those big cartoon crossovers specially Crossover Nexus where most characters appeared just as stone figures and only a few had some small dialogue in a 2 second scene) the storyline is really boring as it is just about the Teen Titans and the three major characters going on a tour on Warner Bros. Studios with mostly gross jokes and moments and the villain (Michigan J Frog) as well as the main conflict is really boring.