One of Bower's smallest tattoos is the skull located on his left middle finger. We first got a good glimpse of the design in 2013 when a photographer snapped a pic of the actor's tattoo at a meet and greet for his movie "The Mortal Instruments: City Of Bones." Bower also shared a close-up of the design himself on Instagram in October 2020. Although he hasn't revealed the meaning behind the tattoo, the skull definitely fits into his rockstar aesthetic.