The chain was established as Amigos in 1980, by Tracy Donahoo, with its first branch opening on Lincoln's O Street in June 1980. The chain was solely a Mexican fast-food restaurant until 1998, when many locations were co-branded with A&W Restaurants. After A&W was bought by Yum! Brands, Inc. in 2002, a defunct regional burger chain, Kings Classic, was revived and replaced A&W in 2003. Several locations are also open for breakfast and offer a third and even fourth brand, Winchell's Donuts and Kopeli Coffee. For a short time, a few of the chains also held Rezato's Fast Italian, these only lasted about a year between 2004 and 2005.
Amigos/Kings Classic has over 25 locations in Nebraska, with fourteen of those being in Lincoln. The original O Street location was closed in 2013 due to changing traffic patterns, and a new location added on 84th Street to replace it.
- Matt Olberding - Lincoln Journal Star. "Amigos closes its original 55th and O location". JournalStar.com.
- "With Nebraska's shrinking labor pool, recruiting workers is Job No. 1". Omaha.com.