Pokémon in of itself is a giant reference. The creator of Pokémon, Satoshi Taijiri, grew up with all the original toku shows and has said before that he was inspired by ULTRASEVEN! In the show, there were kaiju allies called "capsule monsters" that Seven could send out.
Yo, with how popular Mr. Terrific was in Superman, how come no one is talking about his current ongoing book "Mr. Terrific Year One"?? Like if your were ever curious about his history after that movie, this is the perfect opportunity.