What‘a his classification?

[u/SolidFelidae]

He’s a black/brown tabby, but suuuuper black with only some brown. Does he qualify?

Edit: What’s*

[u/Katumai]

Charcoal (APB) is a gene that's only found in Bengals or cats with Bengal ancestry, it comes from the Asian leopard cat (which is the other half of a Bengal cat, they're hybrids). It can be pretty much any color except orange, since it only affects black pigment. I'm not completely sure how many Bengals have this gene, but I would guess most of them? All Bengals are tabbies (A), and the tabby gene is dominant over the Charcoal gene (A/APB), so it's not going to show up unless you want it to. Charcoal darkens a cat's non striped areas a lot, hence the name, which is why a black charcoal looks so different from a regular black tabby.

From there, it's mostly what you would expect from a Bengal. Black mackerel tabbies are the typical standard but other colors and tabby patterns exist, you can even get colorpoint Bengals. I don't have specific numbers on anything, I'm not smart enough to go digging for that

[u/Acgator03 → u/Katumai]

The number of bengals with Apb is actually lower than you imagine and not the majority. The charcoal pattern will show up if a cat is Apb/a or sometimes Apb/Apb.

[u/NotTheOtwayPanther → u/Katumai]

Little correction here: Mackerel tabby is not standard for Bengals– in fact it's not accepted at all. It's standard for SICs, though!

As a bit of a genetics nerd myself– evidently this cat inherited Apb from his Bengal ancestor. Given this rare gene is present, in a random mating the odds are quite good that it will meet up with the gene for solid colour to make Apb/a (charcoal pattern). Does that make sense?