Not sure if this is a glitch but I have beaten everyone in the duel ring up through twitch and I have the bounty for Bendak from Zax but Bendak is not appearing anywhere in the Upper Cantina, specifically right by the front entrance. I've left and come back, restarted the game, everything with no success. I have no other active quests except for the escaping Taris Quest and the Carth & Bastila's speech conversations. Maybe I'm missing something?

Have you checked dueling room?

He disappears from there, when he's ready to duel you. Talk to the Hut, is my advice.

You should talk with the other duellists as well, especially Marl, he will tell you something about the other combatants, including Bendak Starkiller.
He then should appear in the entrance hall of the cantina, next to Graouk.

Just remember you lose light side points when you fight him.

Which I find annoying, since it isn't an evil act at all, in my book. Even the characters in the game (Carth at the bounty office) think it's okay.
It also isn't too bad, I killed Bendak in my playthrough and became a 100% light sided hero without any problems anyway, there is a high tolerance for "mistakes" like that.

There is a way to duel Bendak without losing a light point. There's a youtube on it, if you have the search skills.

No, there is not, I know that for sure.
You are referring to a modification of the game at the most.

The part that I recall has you using the convo path where you tell Bendak that you are there to... I don't remember... something about bringing him to justice.

Ah! I see you are right. You need Ulic's mod to do it.

Still nothing, he's nowhere near the entrance and I already spoke with Mal after I crushed him, spoke with Twitch after I beat him, the Hut just keeps saying to fight Bendak too bad " he's retired" but he is still nowhere to be seen by the Cantina entrance. I'd show you guys the picture but GOG won't let me upload the pic because its too large of a file

Did you talk to the hut with the bounties? (I don't know that not doing so will cause a problem with the quest., I'm just trying to think of anything that could be related.)

Are you using the K1R demo? It has this as known issue, so that would explain everything.

If not, IIRC (it's been a while) he should spawn after your first fight, but refuses to really talk to you till you beat Twitch, after which he dissapears, and then later on in the game (usually after the Swoop Races) you can fight him.
The Hutt will talk about setting up the fight if he's gone for that reason though.