The exploits of the Thunderkittens together on their own were shocking enough, but then we at the Inquirer found out that was just the surface of their deviant behavior. Doing a little probing into the Thunderkittens' history, one of our Secret Agent field reporters found a history of incest between the two.
The above shot was taken during an explosive confrontation in Cat's Lair's control room. Lord Lion-O and the others walked in on the twins during their late night duty and this was what they found. Lion-O was furious at the discovery, not because incest is a morally questionable act, but mostly because he had been cheated on by yet another Thundercat girlfriend. "I expected a little more respect from a fellow Thundercat. WilyKit kept telling me she was no Cheetara. I didn't think that just meant her body."
WilyKit's retort was, "Like the Cat-Who-Slept-With-Half-The-Planet can talk."
WilyKat's only comment about the exchange between Lion-O and his sister was, "What was I, chopped liver? What about the Circus Train?"
However, that was not the only time the Secret Agent caught the Thunderkittens together out in nature. The first photo below shows them skinny dipping together, and the Secret Agent assures us that there was some X-Rated water "horseplay" involved. The second details a clandestine meeting in the woods during a rainstorm. Desperation for affection whilst hiding from the taboo of an incestuous relationship knows no bounds, one must suppose.

Agent Cassio2x caught the two kittens out for a ride together holding hands and thinking dirty thoughts.
Shortly after the above shot was taken, another Inquirer associate caught them getting "close" once they landed:
The twins have also been caught together in perhaps the most obvious and suspicious place as well- under the covers in the bedroom.
That's not all the evidence, however. The Secret Agent also had the following pictures to share:
WilyKit doing "inappropriate" things to her brother at the control panel of Cat's Lair. One can see he is trying to concentrate while the coquettish kitten is doing her best to distract him!
However it goes the other way, too. In the shot below, WilyKat actually surprised his sister, who was already planning a night of fun with an allegedly stoned Snarfer.
This unusual shot the Secret Agent explained as follows: "WilyKit has a birth control pill as the Thunderkittens get ready for an upside down party."
Then, perhaps most shocking of all, is the fact that Lord Lion-O dealt with this scandal by not only condoning the incestuous relationship, but participating in it! Here he was caught with the two of them, and even bringing the legendary Sword of Omens into the mix.
When asked to explain his outrageous behavior, he only said, "It saved a lot of hurt feelings between the three of us to kiss and make up. Thundercats are close, and we want to stay that way."
"Close" is a nice way of putting it, although it would seem the sibling pair of Thundercats has recently become a lot closer. Due to the unexpected complication of WilyKit becoming pregnant by her brother (it would seem that pill didn't work after all), chronicled in the publication WilyKat's Problem and the fact that Third Earth has no laws against marrying in one's family, the two had a shotgun wedding performed by Frogman. (Wedding picture taken by the Secret Agent.)
The severity of the concept of marriage and what it entails seemed to weigh heavily on the newlyweds, and the event was not nearly as happy as it should have been.
After their marriage, the twins were congratulated by their fellow Thundercats as well as their Third Earthen allies such as the Tuskas. (Photo courtesy of the Secret Agent.)
However, the sacrament of marriage it would seem did nothing to curb the twins' insatiable appetites. In this shocking twist, the twins were caught playing a kinky game with the two snarfs of Cat's Lair. Although none of the parties involved would comment on the matter, it was rumored that Snarfer claimed the two of them were "twice the fun" together.
Want to see who they do when they're on their own?