So here are the stats that male kepheras have:

KEPHERA STATISTICS (MALE):
Strength : 12 Dexterity : 16 Constitution: 14
Intelligence: 10 Charisma : 11 Size : 10

ADVANTAGES:
o Resistance to cutting damage, level 3.
o Resistance to blunt damage, level 3.
o Resistance to psychic damage, level 2.
o MINDSENSE: ability to sense others in local area (level 50).
o Native Weapon: Kephera monks who choose the Tahtetso or Shofangi
specializations can use those martial arts weapons more effectively
than other races.
o Hive Mind: This special ability allows female of level 50
and above to declare themselves a Queen and form hives. Any
non-queen kephera (male or female) may be part of a kephera
queen hive. When bonded with a Hive Queen (female kephera
level 50), everyone in the hive gets extra health and mana
and ego (extra 50 health/mana/ego per kephera bonded in a
hive when in the same area as the queen). If the queen dies,
the hive is broken. All members must stay within the local
area.

DISADVANTAGES:
o Cannot wear armour.
o Are susceptible to poison damage, level 2.
o Are susceptible to fire damage, level 1.
o Are susceptible to cold damage, level 1.

While the advantages are pretty nice the disadvantages seem a bit much for the stat layout. And the male stats seem to only work well with monks because of the high dex. I would like to get them fixed to make them more appealing for warriors while keeping them still viable as a monk.

Can it be done?

As long as you cannot wear armour as a kephera, becoming a warrior is not really a valid option for them. The first other warrior you fight will make short work of you.

That's one thing that doesn't work so well; there should be a lot more male kephera than female kephera, but because of the stats, the ratio is reversed.

Male kephera is still an okay race for guardians/wiccans/druids/mages as all you really need for those is con. Mediocre cha and int makes it less desirable than other options, though.

I suppose kephera were always meant to be primarily monks, at least the male ones. As such, they're okay, although, with the lowering of the impact of high end speed for kata weapons, most people will prefer aslaran or faeling. The tankiness is mostly useful for bashing and against monks, but with so many other damage dealers out there, the elemental and poison weaknesses rather sting. If I wanted tankiness, I've always preferred dwarf, depending on where you live, you might want to go viscanti, instead.

If you're in a place where kephera is a normal choice, viscanti probably won't be near the top.

But yeah, dwarves probably beat out kephera in the tankiness department, even as a monk. I've been toying with the idea of going dwarf myself (or krokani, but the low int is meh) since dex matters little for monk PVP when compared to str, and the tankiness of a dwarf outweighs the +5 speed points for weapons of the illithoid/kephera weapon spec bonus.

With tattoos, though, the maluses shouldn't be too much of a problem. With harmony, even less so. Taking away those maluses would probably not be a good idea. Kephera monks are pretty much top-of-the-line bashing monsters, even if they don't do as well in PK.

There's a discrepancy in widespread usefulness viz-a-viz Illithoid (since they work really well as guardians and especially TK mages due to illdrain), which might be skewing your opinion, but I think male kephera are fine for the job they're designed for. They're primarily a monk race and work well for that job; the tradeoff is their overspecialisation means they're less useful elsewhere. You wouldn't expect an igasho to work outside the warrior archetype, right?

I chose the Loboshigaru as a race for my monk class since they have almost the same stats with the exception of higher size and strength. It is also due to the lowering of high end speed and the fact that the poison and elem weakness makes it rather painful to be a Keph. Especially considering the fact that fire/ice is one of the most common choices for weapon runes.

I'd say... giving the male keph more size and con might offset their inability to wear armor and poison/elem weakness.

You realize that they can wear greatrobes, right? The "can't wear armor" thing doesn't actually affect anyone but warriors.

Tattoos. Tattoos > greatrobes, at the moment, anyway, because of the 2x dmp bonus from dmp imbued tattoos. You can easily counter the fire/cold/poison weaknesses with tattoos, and still come out on top, with more armour to boot. No other race has such high dex along with level 3 physical cut/blunt damage reduction too, so bashing as a keph monk is just sweet.

Eh, it's only 20 DMP though. Damage level penalties are also percentage based. So it's really not much of a difference unless you're a psymet monk, who gets a ton of dmp resists from ironskin/energy containment/psi armour/etc.

But aye! Tattoos are better than greatrobes, but we can't really tell how much of a difference it'd make on Keph monks since there are no noticeable keph monk fighters in existence at the moment to show us how much of an impact it has on their game.