 If you liked Pokemon Diamond & Pearl |  ...then you might like Jikuu Tantei Genshi-kun |
Both kids anime shows where our heroes continuously defeat a team of comically incompetent enemies. Both have cute little monsters that our heroes collect and battle with that can also evolve and change shape/form to become more formidable. Both have great world building in the way they establish each and every character and monster, and how they relate to the world around them.
report Recommended by JVskunkape