Ok guys I said I was going to be taking some liberties on the appearance of the Tholians.
For those of you who know what they look like the Tholians have triangular spacecraft with annoying angles for those using the assembly parts of Galactic Civilizations.
Another thing to keep in mind with the Tholians is that when it comes to "alien", ships belonging to the Tholians fit the term. There ships are unlike anything else in the galaxy which is probably because they aren't from our galaxy.
Tholians aren't flesh in blood. They are rock. And there ships look a lot like that. They look like they carved and polished ships from solid rock.
So in sacrificing their basic shape I decided on concentrating on giving them their "living rock" look of ships.
A Tholian Webspinner from the Original series:

Now the Tholian Webspinner in Galactic Civilizations 2:




There is a larger version of it included called Widow-class(Medium)
Here is the Arachnid class patrol ship:



The Tholians of Federation and Empire are refugees from another Galaxy. Fleeing from the slaves they once mastered they came to our galaxy and established the Tholian Holdfast. Limited on building supplies and technology they found a small "chunk" of Klingon space and called it home becoming enemies of the Klingons forever. Still lacking technology they started to take from their neighbors. The Klingons always spoiling for a fight managed to leave pieces of their ships for the Tholians to play with thus was born the Tholian: TK5


The next one isn't really a Tholian ship at all but I've included it into their fleet.
The Aurora class. In the attempt of early star trek to save a few dollars like when they gave Romulans the same warbirds as the klingons they needed to make a "space yaht". This was called the S.S. Aurora and was in the Original series episode called:
"The Way to Eden". What they did was take the Tholian ship and addd warp engines to it. If you watch the remastered episode, well they completely changed it.
So since the Tholians already are known for their klingon hybrid ships I decided to add the Aurora in to the mix as a Tholian/Federation Hybrid.
Original Aurora:

Galacatic Civilizations 2 Aurora:



Ok I'm back to the shipyard working again. I got 13 more Tholians to do.