Very, very minor spoilers inside! Where did Thrag go...

Ye_Olde_Crowe

...after Mulgabesh came back?

I mean, I ran the Thieves Guild quests on two characters back in the days, and Thrag disappeared without a trace after Mulgabesh's return (so basically after the quest with the tomb). The lady told my characters that Thrag went back to being her second-in-command ... but where did he GO? I mean, in-game?

All other active members of the TG (at least those I remember, and then some more) are still roaming the hideout, but none of my two thief chars has seen Thrag after they finished the TG main quest.
Did he just disappear without a trace or can he be found somewhere in Abah's landing?

Curious...

Veinblood1965

I've actually lost sleep about this very question, it's disconcerting. I demand he be returned.

Ye_Olde_Crowe

Fine! Let's start a petition...!

IsharaMeradin

According to his bio sheet at UESP, he can be found in the Thieves Den or along the main street in Abah's Landing. I suspect after the quest line is complete and he is no longer needed that he scopes out the main street looking for his own potential targets.

Have I verified this? No. But it does give you a place to look.

Ye_Olde_Crowe

Thank you for your effort, much appreciated!
Unfortunately I did not discover him along the main street, either, even though I have prowled it (and most of the other streets) at different times of day by now .