So, I meant to post Days 1 and 2 the day they were asked, but I slacked off. :3 So I'm answering all three in one post.
Day 1 - Favorite MCR member:
Gerard Arthur Way <3 I love them all dearly, but Gee is my favourite.
Day 2- first mcr song you ever heard: Hmmm. . .I think it was Helena, but it might've been Sing. I can't remember. The song that got me really hooked though was Welcome to the Black Parade.
Day 3 - favorite song from "I brought you my bullets you brought me your love"
Demolition Lovers <3 Vampires is a close second.