Complete Cast! trophy glitched

[kloudmuka]

Beaten level 16 twice with all characters but the trophy doesn't pop, and the in-game trophy progress is stuck at 6/7

[takeshikitano3]

I beat story mode on my own first, then within that same save I went to the stage 16 icon and looked for other groups to join, doing that over until I had used the 6 remaining characters, and it worked pretty easily.  Also don't skip the initial ending cutscene.  Maybe there is some other bug I didn't see, but joining other matches and not skipping the first cutscene were key for me.

[TrophyChief]

I had the same but replayed each character and watched the full endings and it popped on the last character I needed.