I love Noah.
I think he is a brilliant character. Always have.
I am signing up all of my characters. xD
Roxi- 5th year Gryffindor, party girl, hipster. Her only crimes are sex, drugs, and rock and roll. xD And booze. She would totally buy into Noah's act and play along with it, adopting any role, just to entertain herself. One second she woul make it seem like she was the bad guy, to reveal to Noah she was actually the middle man and she wanted to bring the real bad guy to justice, to revealing she is the bad guy- etctera. Not to mess with him, but to get her kicks.
Wally- 3rd year Ravvie. Aussie. She would probably think Noah was a joke. I would almost think it would be hilarious if he considered her arch enemy. Just because she looks innocent, but she could probably hold her own against him. She would think he was bonkers and if he caught her pranking someone or working with Keith and tried to bring her in, the fact that he was trying to stop her would be enough for her to consider him a really annoying rival. XD
Alice- 5th year Gryff. I really don't know how they'd interact, but it would be interesting. She might fit a damsal in distress, but I doubt Noah would be able to figure out why. She looks sad, frail, and lost a lot of the time, and people do put her down. She can explode and bully back, but she is usually to lost in her art or music to do anything. She used to be a dancer but gave it up because of weird personal circumstances.
Piper- 6th year Slythie. She is a part of the Slythie gang, who would LOVE to mess with Noah. If he caught them all doing something bad and tried to stop them, they would LOVE to tease and mess with him. Which would incite the anger of the Gryff gang. So Roxi may end up defending Noah if we go with this route, rather than leading him on with epic plots.