Rudy is a helper and always helps Alejandro out, he's roughly about 40s and he works with the Los Vaqueros.
He's been a little for a long time and sometimes is a caregiver too! 
He grew up in Las Almas and joined the Mexican Army at roughly 20, serving 20 years alongside Alejandro before passing selection to join the Fuerza Especiales and Los Vaqueros.
He is an age regressor (Age regression therapy involves acting younger than you are, whether that is only a few years younger than currently)