The It's Always Sunny in Philadelphia half of the Abbott Elementary crossover is set to premiere in June, Rob McElhenney ...

After more than two decades of playing Charlie Kelly ... so that if an Always Sunny fan watches their show, it feels authentic to the characters they know,” he explained.

It’s always busy for the It’s Always Sunny in Philadelphia cast. Charlie Day and Glenn Howerton are in movies; Rob McElhenney ...

The star of the FX series also admits he was initially hesitant about the crossover concept as 'It's Always Sunny in Philadelphia ... to come up with something funny to do. Charlie Kelly fit ...

McElhenney’s Mac and his partners in business and crime Charlie (Charlie ... Even if we didn’t know this, the “Abbott" + "Sunny” team-up would still feel something special at a time ...

There was a moment during the filming of the “Abbott Elementary” and “It’s Always Sunny ... into something very, very, very good.” I think the other key pairing was Charlie and Barbara ...

Below, Day chats with THR about pulling off the crossover episodes, his initial hesitations about the idea and why he thinks the next season of It's Always Sunny ... something funny to do. Charlie ...