Lifty and Shifty are a pair of green raccoons appearing in the Happy Tree Friends series. To seperate the twins apart Shifty wears a fedora hat like Henry Jones's, but it's greenish-white - they are also kleptomaniacs, meaning they will steal anything that isn't nailed down (heck, even the stuff that is nailed down) - they have no qualms about what they steal or who from, they almost always end up being horribly killed as a result of their own misdeeds or simply because of bad luck.
Lifty and Shifty are some of the few main cast that are continually portrayed in an antagonistic role and are one of the few Happy Tree Friends that can act deliberately malicious towards others.
Unlike the psychotic Flippy or superhuman Splendid neither Lifty nor Shifty seem to have remorse over what they do though, unlike Flippy, they almost always recieve fatal retribution (while Flippy and Splendid are famous for their resilience to death - though they are far from immune to it).
However, despite their nature, they show their good side. When the rest of the Happy Tree Friends are stranded on a island surrounded by water, Lifty and Shifty help by taking out a inflateable lifeboat.