|Luis' character sprite from Madness: Project Nexus|
|Birth name:||Luis Castañon|
|Activities:||Animator, game developer, artist|
Luis Castañon is a staff member on Newgrounds who frequently submits various content from movies, games, and art. He even had a holiday on Newgrounds called 'Luis Day'.
Luis also appears in Project Nexus as a hireable squadmate in Arena Combat Mode (see below). Luis' character is unique however, as his clothing has different variations, unlike other special squadmates.
He along with Krinkels, Cheshyre and The Swain, can appear as enemies at the Bar during episode 1.