Well theres 4 members Luke, Calum, Michael and Ashton and they're all from Sydney Australia. It all began in 2011 when Luke started putting covers of songs on youtube. He then decided to make a band with Calum and Michael, Calum playing Bass and Michael playing Guitar. Luke went to school with Calum and Michael. Fun Fact - For a solid year in year 9  Luke and Michael hated each other then in year 10 became bestfriends. Ashton came along later when the guys realised they needed a drummer, Ashton went to a different school as them. Michael came up with their band name 5 Seconds Of Summer. Luke, Calum and Michael love Fifa where as Ashton doesnt. Some of their favorite bands are Blink 182, Green day and Nirvana. Lukes is the youngest in the band and his favorite tv show is How I Met Your Mother and he always wears all of the other boys underwear when he runs out of his own. Lukes favorite animal is a Penguin. Michael had never been to a concert before he played at their own. Calum is Kiwi and Scottish NOT ASIAN, he also always has some kind of animal on his underwear. Ashton is the oldest in the band and his favorite tv show is Family Guy. All of the guys in the band are around 6 ft in height.

Oh and no matter what anyone says, they are punk rock. Hope this helped!