The Gang in Always Sunny make the show what it is. Unlike other shows, its central cast is easily the figurehead, and the supporting characters merely act to compliment them, either being a foil for their plans or a sucker to manipulate. This is evidenced by the fact that many of them don't even have names. The show uses them expertly to keep the debauchery ever-flowing.
Throughout its fourteen season run there have been many interesting characters introduced who made enough of an impact to become recurring presences. Although some of them only appear in a few episodes, others have gone on to become central figures in the show who at times cross the line of supporting into lead territory.
One thing is for sure, and it's that the extreme nature of the show drives any actor who appears in it to pull out the best performance that they can to remain visible within the episode. This always means that they end up giving everything they've got and instantly driving up the comedy and quality of the episode.
Although the show aims all of its focus towards The Gang, these side characters work hard to be noticed.
Hey, I'm Michael, lover of all things geeky, in games I always play as sneaky, favourite lion king character is Rafiki. In all seriousness, I am a Bristol-born boy, who moved out to Surrey to get his Bachelors degree in Drama and Theatre Studies before moving on to gain a Masters from the Guildford School of Acting. I adore all things pop culture, and will talk your ear off about anything ranging from my favourite wrestler (AJ Styles) to my favourite show (Avatar the Last Airbender)