Far more than a player who feuded with Ed Farmer (Google it) Al Cowens was a good defensive Rightfielder who would provide 784 Hits for Kansas City.
Joe Randa was drafted by the Kansas City Royals in 1991 and he would work his way up to the main roster only to be traded shorty after to Pittsburgh, drafted by Arizona in the expansion draft, traded to Detroit, then the New York Mets and then back to the Royals again. It was in that second run with the Royals where the Randa would go on the greatest run of his career.
For a time, “The Bull”, Danny Tartabull was one of the more feared power hitters in the sport. The New York Yankees certainly thought so when they signed him from the Kansas City Royals where he was coming off his best season, but he never did duplicate that production in the Bronx (though he did get a Seinfeld episode out of it).