You get something that's both corresponding yet opposite of each other.
Littlefoot and Luke Skywalker: Main protagonists
Ali and Leia Skywalker: Female protagonists, except Ali is a popular love interest for Littlefoot and Leia is Luke's sister. Wish they found that about before going to Hoth...
Bron and Darth Vader: Both the protagonists' respective fathers. Darth Vader started off as a whiny Anakin Skywalker before getting a sweet black suit then going back to the side of good. Bron is a leader of a massive longneck herd.
I throw in Homer Simpson, Chomper, and Kenny from South Park