Alex Gaskarth is a British-American singer, songwriter, guitarist, and producer best known as the lead vocalist and rhythm guitarist of All Time Low. Born in Essex, England and raised in Maryland, USA, Gaskarth co-founded All Time Low in 2003, helping shape the band into one of the most influential acts in modern pop-punk. Known for his catchy songwriting, charismatic stage presence, and emotionally resonant lyrics, he has also worked with numerous artists across rock and pop.

Outside of All Time Low, Gaskarth is part of the pop duo Simple Creatures with Blink-182's Mark Hoppus and has contributed as a songwriter to artists such as 5 Seconds of Summer, McFly, and more.

Alex Gaskarth collaborated with ONE OK ROCK on the song Jaded, featured on their 2017 international album Ambitions. His guest appearance adds a distinct melodic contrast to Taka's powerful vocals, blending American pop-punk with ONE OK ROCK's emotionally driven rock style. The collaboration highlights the cross-cultural appeal of both artists and underscores ONE OK ROCK's international ambitions during that era.