I mean, are you really going to say the hot-blooded competitive goofball Spring Man has less personality than Misango, Ninjara, Min Min, Twintelle, Byte & Bark, Springtron, Ribbon Girl and Helix? The only characters you can really argue have “more personality” than him are characters like Dr. Coyle, Lola Pop and Max Brass.
And no, no-one fits the bill of being the exact same as him in terms of serving the role of being an beginner character who is designed from head-to-toe to represent the essence of what ARMS is all about, which is precisely the reason why he is the most promoted by Nintendo as the face of his series. And as Nintendo is choosing the DLC, the argument shouldn’t be what makes him special since that is already clear.
This is a strawman. We don’t need anything, including any of the DLC characters to begin with. It’s just a case of people wanting more representation. At any rate, I already feel like the base roster alone is as close to perfection as a fighting game crossover roster can get.