Colossus

You might know this one from the x-men 2 movie or the Deadpool film. I think it's a fun character so here's a little extra about Colossus.

Piotr Rasputin was born and raised in (you guessed it!) Russia. He worked on a collective farm and when his powers fist emerged he used them to help his fellow farmers. Piotr always knew he had a greater path in front of him. When the x-men were in trouble Xavier formed a new team of mutants to save his original x-men and this is when he contacted Piotr. The young Russian agreed to leave his native land and went to the US to train with Xavier.
Soon Xavier gave him the code name Colossus and when they managed to save the original x-men Colossus decided to stay in the US and remain an x-men.

I think it's a fun character and hope he'll return in the second Deadpool or who knows? Maybe we'll see him in future x-men movies.

Weapon II

Weapon II, probably doesn't ring a bell does it? That's because it's a funny little side character from the wolverine storylines. Maybe you know one of his famous quotes? "I'm the best there is at what I do, but mostly what I do is gather nuts of winter." Still nothing? Ok, I present to you: weapon II.

 Before the Weapon X experiment started there was a different organisation called "Weapon Plus". They were the first group of people creating living weapons and experimented mostly on animals.

Weapon II has all the abilities of Wolverine in addition of a enhanced brain. Now I know this little one will probably never appear in the MCU but am I the only one who'd love to see him face off against Rocket Raccoon? Maybe one day who knows!