Zero and Jet as kids.
Back then they were called Travis and Trent, they changed their names in later days when they got the opportunity to make a fresh start with their lives.
At the age of 7 years old their mother gave the twins to a demon to pay back a debt, and the demon then sold the twins into slavery where they spent their child, teen and a small part of their adult years.
Zero and Jet (aka Travis and Trent) are © me.
PS: ignore the watermark XD this is also submit on my DA account so I've got my DA name in the corner.