Combine monsters?

Is there a way to combine multiples of the same momster you have caught to make 1 stronger one?

Is there a way to combine multiples of the same momster you have caught to make 1 stronger one?

Nope, when you get a duplicate of any monster of 4 stars or more, your original gets a +1 added to it, which decreases the amount of time it’s skills use

Does ultra evolving duplicate Cursed Island dungeon monsters count the same as an egg re-roll?

The dungeon monsters on cursed island are not in the egg roll machine so the only way to ++ those is to use a special potion