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Percy made a simple wish; he wanted the abilities of every mortal kombat character. The fates granted his wish and after five years of being off the Greek radar and on SHIELD's the Olympians thought it was time their hero returned. Now let's put three drama queens, a group of heroes, two bad guys together and a seemingly OP character and see what happens.

This is more like a side story to a future story.
Disclaimer: All Percy Jackson characters and Heroes of Olympus characters belong to Rick Riordan and only Rick Riordan