Basically your kinda like a yugioh player/sunmoner guy but you can summon characters from any part of the dragon ball franchise but you have a limit of 5 out at once with some limits like you cant summon any of the angels, zeno etc but you could summon , a team like this for example

Cumber , mui goku , bardock ssj3 , vegito, Fu

They can exist as long as they are summoned and will always protect and obey you but have there normal personality say you summones frieza and bardock this could happen as a example

Bardock: I HATE WORKING WITH YOU!

Frieza: the feelings mutual monkey mr y/n doesn't need anyone else but me im stronger and better than you monkey's

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Another example is they may not work well in teaming up so play it right basically put who gets along on teams together now the down side is gods of destruction you can only summon one to aid you it costs your entire 5 summoner cap.

But say you wanna summon a full villian team again make sure they get along it cant be like

"Turles , slug , mira , masked bardock, towa"

Cause turles and slug wont get along making them kinda useless

And using to many heavy hitters leaves you wide open so its like strategy in a way

But yea thats my most creative idea today imo.