[5] Their earliest interest in comics were through publications like Mad magazine, Teenage Mutant Ninja Turtles and Uncanny X-Men, and in particular, creators such as Mort Drucker, Jim Lee, Marc Silvestri, and Adam Hughes.

[6] In their teens they were enthusiastic fans of fellow Filipino comics creator Whilce Portacio, and his creation, Wetworks.

[1] The Luna brothers sent Ultra to Image Comics publisher Erik Larsen as a blind submission, which consisted of a synopsis and five-page sequence.

[9] Similarly, Jonathan Luna pursued his own project for Image, teaming with fellow writer Sarah Vaughn on Alex + Ada, which was released in 2013,[10] and won a Special Prometheus Award in 2016.

It featured Lena Headey as Ultra (renamed Penny Penalosa) and Peter Dinklage and was directed by Helen Shaver.

[1] Early in their career they shared both writing and art duties in their work, as seen in the first several issues of Girls, which they have described as a transition point in their collaborative process.