A tag use for pictures with groups of 3 or more same-stage/level bosses.
There are two ways to use this tag:
From within a series
The characters are from a single stage (ex: post #599038)
The characters can be from multiple stage (Like 3 Stage 1 and 3 Stage 4) But cannot have one that's out of place (3 Stage 1 and 1 Stage 4) (ex: post #721271)
In the case of comics, it should make a point of pointing out that's most of the bosses there. (ex: post #802620)
