Jaegar and Skittles is wild 😂 via 🎥: The Hangover Alan in The Hangover refers to Alan Garner, one of the most iconic and hilariously chaotic characters in the 2009 comedy film (and its sequels). Played by Zach Galifianakis, Alan is the socially awkward, eccentric, and completely unpredictable brother-in-law of the groom, Doug Billings. In the first movie, Alan joins Doug’s bachelor party in Las Vegas alongside Phil (Bradley Cooper) and Stu (Ed Helms). After a wild night, the trio wakes up with