Arrow: Your First Look At Mr. Terrific In Costume

Tonight on Arrow, Echo Kellum finally got to shout "suit up!"

And then, more importantly, he actually suited up, going into the field in his Mister Terrific costume for the first time.

He hasn't yet identified himself using the "Mister Terrific" name, although he did namecheck Terry Sloane -- the Golden Age Mr. Terrific from the comics -- as his inspiration (and the inspiration for the "Fair Play" jacket he wears).

Since pretty much all of Arrow happens under cover of night, we didn't get a great shot that showed off the whole of the costume -- but check out the handful of shots we got for a composite look at the costumed hero fans have been waiting to see.

The look had popped up on some unofficial set photos on social media, so it's arguably no surprise to hardcore fans to see that producers went with the comics-accurate, T-shaped mask over Curtis's face.

Terry Sloane, the original Mister Terrific, is referenced as a beloved wrestler, whom Curtis looks up to as a hero. That's likely a wink-and-a-nod reference to Cody Runnels, who played Derek Sampson in tonight's episode, who is a professional wrestler.

In the comics, Sloane -- the first Mister Terrific -- was a businessman and university professor. He was created by Charles Reizenstein and Everett E. Hibbard, first appearing in 1942's Sensation Comics #1. His niece, the villain named Roulette, will appear on Supergirl later this season.

Michael Holt, the second Mister Terrific and the one Curtis is most clearly patterned after (including the leather "Fair Play" jacket, although yes, that's a tribute to a green, canvas "fair play" jacket worn by Sloane) first appeared in 1997's The Spectre #54 and served as a member of the Justice Society from the late '90s until 2011's Flashpoint reboot.

A version of Michael Holt had his own comic book series for about a year after that reboot, but it was cancelled due to low sales not long before Curtis Holt started to appear on Arrow.