The term is used in South America, and refers to somebody who is exceptionally good looking, so therefore it is a compliment, and tends to be used for men only. It is both a noun and an adjective; the noun has three different forms:
-pl m "Facheros"
-pl f "Facheras"
-m "Fachero"
-f "Fachera"
"Seb es el mas Fachero"
"Maxi es casi un Fachero"
"Que Facheros que somos"
Someone who is a total gangsta from the ghetto. A fachizzeler can cuse you out with the word fucker in 379 ways. A fachizzeler is know around the town as " That guy" or "The baddest muther fucker youll ever see".
Fachizzeler: You better wish you never even got in my way walking down that hallway bitch.
Guy: Oh shit