|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.