???

[Glacier]

When I used an AR code to Walk Throgh Walls I went into the Mystery Zone and when I went to hatch an Egg it said:
A mysterious Pokemon egg found in the Mystery Zone.
I'm just wondering if this is safe to hatch or keep. (Jeez I sound like such a noob)

 

[Aqua Mudkip]

Aqua Mudkip: It might be a Bad egg or just a Pokemon.

 

[Moana Kai]

When that happend to me, it was nothing valuable to me so I just released it to the wild.