Charlie's false son is now the same age as Charlie Day when the first season aired. : r/IASIP

It's Always Sunny In Philadelphia – Prax Writes Stuff

Charlie Goes America All Over Everybody's Ass, It's Always Sunny in Philadelphia Wiki

It's Always Sunny In Philadelphia – Prax Writes Stuff

After re-watching the first season, I realized that Mac is the only character that hasn't changed since the first season. Dennis and Dee were shockingly normal, Charlie was just dumb, but Mac

Film Independent

ebin.pub_teen-tv-9780415315852-9781138713895-9781315229645, PDF, Adolescence

Fist Fight': 'Always Sunny' Director on Shooting His First Feature with Comedy Giants

In Season 2 Episode 8 The Gang Runs For Office Dennis reads the speech Charlie wrote for him - I did some investigating : r/IASIP

Crazy to see how these guys have aged throughout the years : r/IASIP