Marco watched Aang closely, evaluating. He didn't miss that change - Aang has seemed like a bubbly idiot at first, but Marco was definitely getting the feeling Aang could be very dangerous.

Although he still found the idea of someone having the job of saving 'everything' completely ridiculous.

"Sooooooo, you're not a god, and yet you're responsible for everyone and everything?" Marco said instead. "Remind me to blame you the next time my mom kills a house plan then. Cause dude, saving that thing was so your job."