It's difficult to enact change by yourself (even in the world of anime), but with the proper team at your back, anything is possible. The power of teamwork is an important element in most anime, and it's highlighted in popular series like Dragon Ball Z, Naruto, and My Hero Academia.
The strongest anime teams consist of superpowered individuals who have pledged themselves toward achieving a common goal. Sometimes, as with the Z Fighters of DBZ, this goal involves something altruistic like protecting humanity. But there are other anime teams, like the Akatsuki from Naruto, that have far more villainous intentions.
Whether their goal is heroic, villainous, or somewhere in between, these teams are a sum greater than their parts.