I accidentally deleted my endgame file and am wondering, is there a way..

No...
This happened to me once. Just do It ALL OVER AGAIN

No, it won't but if you completed that file all the support links should show up in the Support Log and your Avatar (of the lost saved game) should be in the Avatar Logbook. Your Support Links should still show from your old save to your new save (it will just have your current Avatar's name (last played Avatar's name) instead.

Happened to me today. While using the Avatar Logbook trick to max out all my stats, I did something really foolish and lost all 100+ hours of gameplay. Luckily there was another file from that game, just a bit older. Just know that you're not alone.

I've just done this myself, literally 5 minutes after finishing the game (I saved a copy before the final battle then realised it wasn't necessary and went to delete it). Horrible thing to happen, delete game options should ALWAYS kick you back out of that mode when you've deleted a game.

Happened to me as well they need to make some warning message before you save over a file of different origin or perhaps multiple warnings....

I Can Make A Warning: WARNING! DON'T DELETE UNLESS YOU ARE TOTALLY SURE! IF YOU DO!!!!! YOU WILL HAVE TO DO EVERYTHING ALL OVER AGAIN!!!!!!!!!!!! End Of Warning. But No,You Are Unable To Get Your File Back. Not Without Redoing Everything.

Yea I had this happen to me too, it's weird, if your in a battle and on turn something you can delete the turn your on and start at the beginning of the battle, but if your at the map or not on a turn of a battle, it deletes your file. Trust me it sucks soooooo much, I was on the final chapter, but I was getting some spot pass characters that were high level, I was resetting cause my units died so I could start over on the battle, well after a few hours of this I accidentally deleted my file, thinking I was on the turn of a battle, kicked my self to the moon and back and started the game over. I'm really sorry, but your not alone.

Yea I had this happen to me too, it's weird, if your in a battle and on turn something you can delete the turn your on and start at the beginning of the battle, but if your at the map or not on a turn of a battle, it deletes your file. Trust me it sucks soooooo much, I was on the final chapter, but I was getting some spot pass characters that were high level, I was resetting cause my units died so I could start over on the battle, well after a few hours of this I accidentally deleted my file, thinking I was on the turn of a battle, kicked my self to the moon and back and started the game over. I'm really sorry, but your not alone.

I deleted one of my best save fiels with all characters once...-.- At least I have my main file..WITH NO ALL CHARACTERS -.- All you can do is try to restart the game...it sucks, but It's not possible to bring it back..sorry! :(

I completed the game 100% then a couple of days later my save file was GONE FOREVER I haddnt deleted it but I have heard other nintendo consoles do it to other lego games.is it nintendo or the console by nintendo

Happened to me. Wanted to get rid of another save, then took a break. Came back, thought I was on the file select menu to play. I clicked my main.... Worst thing that could happen at two in the morning...

It happened to me today, deleted a file I didn't need,
And when I selected my main file, it was to late to realize
I had just deleted my main file.