Jean Grey and Rogue

Puck + Wolverine = Puckerine

An even smaller, less angsty version of Wolverine with a fat mustache.

Storm + Toad

It's raining frogs!

Archangel and Bastion

The Ultimate Horseman of Death

Colossus and Blob.

Seriously heavy metal.

Green Lantern and Silver Surfer.

Kitty and Lockheed.

A dragon girl who pets herself?

Not an X-men, but Jessica Jones and Jessica Drew a.k.a. Spiderwoman.

Of the X-men...

Let's save everyone some time and mix Hope with Rachel.

@sprior93: Okay, that's just wrong.

Now I have to wipe off the coffee I spit on my iPhone. Thanks Sprior.

Generic but Warlock and Cypher.

Damn I feel like I had others as well...

Scary thought.

Magik combined with Selene.

Nitro and Cannonball= RPG

Wolverine and Cyclops. He could like... shoot adamantium blades from his eyes.

Definitely Warlock and Cypher. As I mentioned before merging Cable and Nate Grey is a must in my opinion. Now I'd also merge Old Man Logan with the real Wolverine. Also the O5 should be merged with their adult selves. Sick and tired of all these duplicates and multiples running around

Magik + Juggernaut+Northstar.

Pretty much covers all your bases. Raw Power, hax and versatility +Durability + Speed.

I keep trying to post, but the look on Canadian Queen's face tells me to come party. Does he lose the ability to telepathically communicate with animals when his bones change to organic diamond? Is hissy fit the new berserker rage?

Putting that aside

Quicksilver and Vanisher

Is he speeding or 'porting?

Lady Mastermind and Emma Frost.

I'd thoroughly enjoy a mixture of Emma and Scott.

storm and magneto

M & Domino.

Bishop & Rogue

Kitty and Kurt...the ultimate ninja assassin (if they wanted to be.)

Batman and Superman.

Monet & Blade.

Emma and Xavier.

I'm giggling myself silly picturing Emma completely bald sitting in a wheelchair trying to look fashionable.

Off topic... But I wish Marvel just merged Jessica Jones and Jessica Drew/Spiderwoman together.

But if we're strictly talking X-men, I'd say:

Sage + Selene

Rachel + Hope