Talk:Pets/@comment-202.22.170.228-20161111135148/@comment-27862737-20161111194120

Fusion with Pets should function just like Fusion with armors. If you were to fuse a level 99 Epic armor with a level 1 Epic armor, you will basically split the difference, coming out with a level 49 or 50 armor.

The same should apply with Pets: fuse a level 42 Pet with a level 1 Pet, and you may go up a Tier (to 2), but you will need to split the difference again, so probably around level 20 or 21.

If you're fusing multiple level 1 Pets into your level 42, though, you'll have to account for the difference there as well. For instance, fusing a level 42 Pet with two level 1 pets (all 3 star Tier 1) would result in a Tier 2 Pet that has roughly a level of around 13 to 15 (just guessing, but it should be around there).