The Bloodfang was Thrakhath's personal fighter, there were two types made, the prototype from wc2 and the mass produced version in wc3. From Fleet Tactics (I know it isnt a canon source, but best I could find atm) "The Bloodfang series of super-heavy fighters has a long-deserved reputation of being the nastiest class of fighters the Kilrathi military ever put into service. This fighter is specifically made for use by Prince Thrakhath nar Kiranka, the Kilrathi's Supreme Commander and their finest ace pilot. There are no exploitable weaknesses of this fighter, the Bloodfang has it all: speed, agility, shielding, armor, weaponry. The alleged prototype that Colonel Christopher Blair encountered in 2667 is rumored to be the second-generation Bloodfang, but was determined that only one aircraft of it existed. In 2669, the Bloodfang was finally pressed into limited mass production. For more information on this dangerous space fighter, see the 2669 edition Bloodfang."
And the WC3 verson:
"The mass-production variant of Prince Thrakhath’s personal custom fighter, the Bloodfang super-heavy fighter is the most feared space superiority fighter the Kilrathi possess. While the Kilrathi Vaktoth heavy fighter already outclassed the Terran Thunderbolt VII in terms of raw power, the newest variant Bloodfang could make any other fighter in space look like an underpowered pregnant space pig and an under-armed gnat. Intel has determined that while the Bloodfang has seen limited mass-production, only the most elite of the Drakhai Imperial Guard are allowed to pilot this fighter. It is also common knowledge that Lord Thrakhath himself flies a customized version of this fighter. As it stands, only our new Excalibur fighter has any chance of winning against a Bloodfang."