Unfortunately no, no in game mechanism to do so. You can try to contact support either through an in game ticket or here: https://plarium.com/en/support/

I'd say chances of reversing are quite slim, however. =/ Sorry. 

i just put in a request, i'm devastated now... i worked really hard to get Artak to rank 6 only to rank up the wrong champion. he would've been my first rank 6 champion. i like using him alot. i'm also a free to play player, it took me forever to do this and level up all these champions to rank him up.

Why is axeman 5.50 not 5.1?  Please tell me I read this wrong.... and you aren't leveling your chickens to 30/40/50... 🙏 

I completely missed this, oops. 

Definitely don't want to be doing that. 😂

i don't know what he means by that? does he mean i shouldn't be leveling food to 50 or something? i did use auto battle before. and based on what i searched i seen people make the same mistakes and they would ask for a rollback or something before the issue happened and then someone would comment on the thread for their ID or Nickname so they would fix the issue.

You definitely don't need to be taking champs to max level if you're using them as chickens. Wherever you're going to use them as a chicken (whether it be rank 3/4/5) you don't have to level them up, but you can for Champ training points. I wouldn't be taking them past ~20 at rank 4/5, though.

As for rollbacks that's not standard for mistakes made by players and you'll have to contact support for something like that. 

i see... just something i simply overlooked using multibattle. it doesn't let me rank up a 3 star champion to 4 stars unless i have chickens and 3' 3 star champions and 1 champion is level 30 that was the only mistake i made. i only used 1 chicken for 4 star champions while 1 champion was level 40 with 3 champions and 1 chicken and 4 champions for the 5 star champion i accidentally upgraded but i only wanted to upgrade artak first cause artak was already level 50.

You will need to level your food champions to 40 as a 4* so you can rank them up to 5* but do not level your food champions after you rank them up to 5* (You CAN level them to 12-15 or so in order to get extra points for a champ training, but never level food champs to 50).

thanks grymm, just a total rookie mistake on my end. i was so excited i finally had what i needed to get Artak to rank 6 that when i had everything i needed i accidentally selected the 5 star axeman who happened to be level 50 cause i used multibattle and i was rushing and totally overlooked that. but once i get artak to rank 6 and relinquary tender to rank 6 i should be ready to 3 star nightmare campaign with them two and i just got scyl of the drakes too.

*Update* they actually did a rollback for me as a one time exception. they knew exactly what i did and used and removed the 6 star axeman from my account and gave me my 5 star chicken back. i love this game, community and the support team is awesome, now i can 6 star Artak lol.

   1x  5* Axeman

• 1x  5* Pikeman
• 1x  5* Swordsman
• 1x  5* Bandit
• 1x  5* Chicken 

That's awesome.  And I'm glad the 50 axman wasn't u doing that for all your chickens.  😀

that's great news, glad I was wrong :)

Awesome! Happy they were able to help you out. 😌