Danny DeVito was the right choice for It's Always Sunny in Philadelphia, but both the cast and fans were skeptical about him at first. Here's why.

It's Always Sunny In Philadelphia forever changed with the introduction of Danny DeVito's Frank Reynolds, and he's at the heart of some of the show's best episodes. The first season of It’s Always ...

played by the inimitable Danny DeVito, from It’s Always Sunny in Philadelphia. This short, gun-toting oddball not only steals ...