Some anime, especially certain shounen series, seem to have a “throw it in” mentality. They have all kinds of individual elements whose presence in the series seems unrelated to anything else in the series. This results in some really unique worldbuilding.
Dragon Ball is a great example. At it’s core, the central premise of the early parts of the series was “loosely based on Journey to the West and has magic balls that summon a wish-granting dragon”. But just look at everything we see within just the early episodes. Dinosaurs! Hovercars! Animal people! Whatever the heck Puar is! Transforming at the full moon! Then we get robots (including Arale from Dr. Slump), a manwolf (which is not the same thing as a wolfman), someone whose personality and hair color change when she sneezes, and Krillin being able to smell at first but then not after he’s reminded that he doesn’t have a nose. (Okay, that last one falls under Looney Tunes territory.)