Location: Sky Pillar Victory Road Mt. Silver Rock Tunnel
Ability: Rock Head Rivalry
Egg Group: Monster
PokéDex: A Pokemon who arrived to Earth from space before humans came to life. They are super ancient Pokemon and are the only Pokemon who has the human language as their first language and can act like a human. Human speech are their first language, unlike other Pokemon who speaks by saying their own name. Omegas are also known to be bashful, has a temper and likes a challenge.
One more thing: could you change the name? That one is kind of confusing because it's like it's two parts, but also one part. And it's not totally clear whether it means X-I-S or like "Ziss" or what. And the Omega thing doesn't seem right.