Spanish speaker advice please regarding name

Can't help with everything, but Spanish uses plural articles and adjectives, so the plural would be "Los Caballeros Oscuros." The translation is technically accurate, but I don't know if there's a better idiomatic translation.

Not a native speaker, either. Kat M picked up on the need for a plural article and a plural adjective. (Gotta match the gender and number of your noun.)

If I was putting together something like that, I might shortlist Los Caballeros Fantomáticos.

Oscuro is a good word-- it has connotations that can be used for lack-of-light, for dark in color, or for dishonest practices. Fantomático is more of an emphasis of the mysterious aspects of "dark".

A native speaker would be able to say something more definite-- but since one hasn't popped by, I thought I'd throw in my input.

Not native Spanish speaker, but with a translator certificate and a DELE - and I agree more with the version Los Caballeros Fantomáticos.

I'm a native Spanish speaker from Spain (not Latin America), and a translator. I've never heard the word fantomatico, and the dictionary says it's Italian.

Oscuro, as someone said above, has good connotations of being dark and shady.

Also, fantomatico conjures up phantoms or ghosts, which in Spanish are ​fantasmas.

I looked for a dictionary with a Word Frequency chart... it doesn't look like fantomático is in common usage... 1918, 1943, 1975...

I suppose it's a little like running across "chersonese" or "hirquiticke" in the wild. But I didn't realize it wasn't in common use.

One way to get around choosing a name in an unfamiliar language is to look at the current gang names, I don't believe Dark Knights is exactly the theme they use.

Here's a quick list from Wiki:

2.1 Beltrán-Leyva Cartel
2.2 La Familia Michoacana/Knights Templar Cartel
2.3 Gulf Cartel
2.4 Juárez Cartel
2.5 Sinaloa Cartel
2.6 Tijuana Cartel
2.7 Los Zetas
2.8 Gulf Cartel
2.9 Juárez Cartel
2.10 Los Zetas

Click to expand...

Except for the odd men out, Knights Templar and Los Zetas, the names are mostly places. Are you using a fictional city or state? Michoacán is taken but how about one of the other states or even a place like the Palanque Cartel.

I don't see Yucatán on the list. Uxmal is another one, pronounced ush-mal.

List of Mexican states

Dark knights is fitting but place names are more true to actual cartels.

Just a thought.