Splatoon seems to be developing quite the fan art following already....

Why is Callie mostly naked in so many of them.
They asked with this splatfest:
“What is your approach to Dragon Quest games? Do you go All Guns Blazing, or are you Cautious?”

Callie 's outfit is the Dragon Quest III female Soldier / Warrior in the first few pics
representing full out attack with all Guns Blazing
Marie is the Pilgrim / Healer from Dragon Quest III
representing the Cautious defending healing strategy in battle

And is that Squigeta in the last one?
Akira Toriyama. The guy behind Dragonball is also main character and monster designer of the Dragon Quest series.
So. Dragon quest characters tend to look like Dragonball characters