Lotor had been detained by the Voltron Team, and he's being kept prisoner on the Castle of Lions.

You took the lift and walked along the long path down to Lotor's cell. He could see you from a distance away, and you could already see the sly smirk forming on his face.

He doesn't rise from his seat, instead, he stares up at you with those azure eyes of his.

"Well, well. It hasn't even been a day and you've already come to visit me again. Missed me much?"