Advice for a team

Working on building a team to battle my friends for fun, it doesn't need to be meta and super overpowered things or whatever, but I want it to be good. I like using pokemon that I personally think are cool, rather than meta.

Right now I know for sure I want to have

Raichu Ninetales Gyarados Venosaur (????) (????)

Help me with some recommendations for my last to slots! Who should I use?