Why did my Illumise get a Volbeat egg?

Question

I was breeding an illumise, and after 2 or 3 eggs, a Volbeat came out! Is this a glitch, or is it supposed to happen?

Comments

Apparently, it "can produce eggs that contain either Illumise or Volbeat", and Volbeat can do the same.

Answer 1

This is intentional. Volbeat and Illumise are gender counterparts, and as such, either one can produce eggs of the other.

Comments

Can nidoran do the same?

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Sometimes. Nidoran is complicated: https://pokemondb.net/pokebase/280363/

Answer 2

Yeah, it can happen. Volbeat and Illumise are basically the same thing except with different appearances and swapped offenses.

Comments

sorry to dive in on someone elses question, but....

i understand your answer, but

do i have to do anything to get the 'volbeat egg' to be a illumise egg?  cause that happened to me, too on emerald :< i didn't expect that...

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No, it’s just a random 50/50 chance of getting either.

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@ Stephwheel8

it's fine... i found that out :>
thanks, though :>

i'm searching for a mild, tinted lens baby illumise