It's Always Sunny In Philadelphia Season 13: Everything We Know So Far

4. A Cast Member Has Gone...

It's Always Sunny Season 13
FX

The main cast of It's Always Sunny has stayed the same since Season 2, in which Frank joined. However, it's looking like that streak is to change.

In the final episode of Season 12, Dennis left the gang to become a dad in North Dakota. Fans weren't sure if he'd return, but the official answer turned out to be... 'sorta?'

Dennis is to return in a small role in a select few episodes. While no-one is sure if that means he'll hardly be missing, or if he's only going to be in one or two episodes, it's definitely a change in the format that made the show great.

Glenn Howerton, who plays Dennis, now stars in the sit-com A.P. Bio, which NBC renewed for a second season. Howerton has chosen to focus on this and other acting commitments, rather than It's Always Sunny.

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