Charlie had been taken by surprise, jumping away and flying into the air a few feet as soon as someone touched him. He guessed he must've been off his guard, or else he would've moved out of the way. "O-Oh. Sorry. Sorry." He apologized, "I was just-- I hadn't--- I mean. I'm sorry." He rubbed the back of his head awkwardly, landing lightly back on the ground. 

Willow glanced over at them, seeing that the Martian clearly needed help. She smirked. "Well, Rob," She sped behind him, bending over him from behind so she could look him in the face, putting her hands on his shoulders. "Since we're in the training room, and there's no chairs here, is probably why he was sitting in the middle of the floor. Kind of like how you are sitting in the middle of the floor right now. Just saying." She shrugged, straightening herself and going to put an arm around the martian's shoulders. "Plus he's like, from another planet, probably don't have chairs on mars or something."