The game focuses on individual characters, each with their own unique abilities and powers. You can choose to play as your favorite character and level them up to unlock new moves and abilities.
However, there are ways to utilize the power of various characters indirectly:
* Team Battles: You can play Team Battles, where you team up with another player (or CPU) to fight against other players or CPU opponents. While you don't literally combine spirits, you're essentially fighting together as a team, utilizing the strengths of both characters.
* Fusion: Certain characters, like Gotenks and Vegito, are fusions of two characters. While they are unique characters, they embody the power of their base forms.
* Support Items: Some support items can temporarily enhance your character's power or give them temporary access to another character's special abilities.
Therefore, although you can't directly use "everyone's spirit," you can experience the power of various characters through different gameplay elements and mechanics in Dragon Ball Raging Blast 2.