I'll be honest...I sort of bailed on Marvel Champions as the X-Men cycle began. I still collected everything, but my interest was almost zero, which is a tale for another day.
What is important is that when I finally acquired the most recent content...Rogue blew my mind.
Every turn with her is a mandatory puzzle, as you decide which card you are going to siphon for your powers. She then has several hero cards that receive bonuses based on the target you attach 'Touched' to. It's undeniably tense and difficult, making Rogue one of the most interesting characters to play in Champions.
She has the ability to stun, confuse, increase her defense, heal, stun...she can basically improve almost ay aspect of her character. It's insane.
Rogue is an incredible character that truly shines when someone is thinking long-term.