Glenn Howerton shows off his vocal versatility by lending his voice to five different characters in two upcoming episodes of FX's newest animated comedy series Unsupervised. Glenn Howerton - who plays Dennis Reynolds on the FX comedy It's Always Sunny in Philadelphia - is also an executive producer of Unsupervised.

In Fires & Liars, which airs as the fourth episode on Thursday, February 9 at 10:30 PM ET/PT, Glenn Howerton voices "Frankie" and "Geno," twin firefighter brothers, and "Lewelyn," owner of an Internet café

In Nits, which airs as the sixth episode on Thursday, February 23 at 10:30 PM ET/PT, Glenn Howerton voices flute-playing "Clint" as well as "Dirt," "Megan's" (Kristen Bell) date to a school dance. Check out his characters below.

<strong><em>Unsupervised</em></strong> Character Photo #1

<strong><em>Unsupervised</em></strong> Character Photo #2

<strong><em>Unsupervised</em></strong> Character Photo #3

<strong><em>Unsupervised</em></strong> Character Photo #4

<strong><em>Unsupervised</em></strong> Character Photo #5

B. Alan Orange