Dansby remains close with a couple of his former teammates, most notably safety Adrian Wilson.
Dansby, in fact, said Wilson "is like my brother."
Of course, Dansby won't be going up against Wilson since both play defense, but he'll be on the field trying to help stop Larry Fitzgerald, like him a member of the Cardinals' impressive draft class of 2004.
Dansby was a second-round pick that year, taken with the 33rd overall selection.
In his six seasons with Arizona, Dansby started 83 of the 90 games he played and led the team in tackles three times.
His biggest play in an Arizona uniform came in the 2008 playoffs when he returned a fumble for a touchdown in overtime to help the Cardinals beat a Green Bay team whose coaching staff included one Joe Philbin.
Dansby left Arizona to sign a big-money free agent contract with the Dolphins, and has been a very good — if not game-changing — addition to the Miami defense.
"I think he is an athletic player, I think he is an instinctive player," Philbin said. "He's had good production over his career, and obviously he is playing well, but there is certainly more. We told our guys that while we've done some good things, we haven't done things consistently well enough to earn the victories that we all work so hard for. So we have to get more out of a lot of guys on the football team."
While the Dolphins will fly to Arizona with a 1-2 record, Dansby drew a lot of attention when he said this year's Dolphins team was more talented than the 2008 Cardinals team that lost to Pittsburgh in the final minute of the Super Bowl.
Out in Arizona, Dansby's comment didn't shock anyone.
"Karlos was never the type to shy away from what he thought," Wilson told azcardinals.com. "He's always going to say what's on his mind and he's always going to be there for his teammates. That's what you miss about the guy. He'll be there for you, regardless."
Dansby has tried to downplay the game, telling Arizona reporters it's "another game on the chart," but his later explanation that he and Wilson have been texting about the game quite a bit gave him away.
"Man, we've been going back and forth about this game ever since the schedule came out," Dansby said. "Me, him, Fitzgerald, Darnell (Dockett), we've seen each other out and about and we've been talking about this game. We knew it was on the horizon and now it's coming to pass. I'm coming back and they're going to see how much I've advanced or took a step back, I guess. Whatever you want to call it."