One Of Most Popular 'Walking Dead' Actors Almost Wasn't On The Show

Steven Yeun, who plays Glenn on the show, said before the series' start, he auditioned for a new ABC series.

However, it didn't work out and Yeun didn't get the part.

"I thought I killed it, and I was crushed," said Yeun.

The actor said about a month later, he landed a role on "The Walking Dead" as a sidekick to main lead Andrew Lincoln and the show became a break-out hit.

"If I had booked that other show, I couldn't have done 'The Walking Dead,'" said Yeun.

As for that ABC series? Yeun said it ended up getting cancelled.

While he didn't name the show, here are a few ABC series that were cancelled during the 2010-2011 year, the same time "The Walking Dead" began.

Season 4 of "The Walking Dead" premieres tonight on AMC at 9 p.m.