Let me start out by saying I do not like the Wonder Twins. To me, they are what ruined the Super Friends in the 70s. I remember the earlier seasons (that I saw in reruns) that had all the cool heroes like Green Lantern, Flash, Hawkman, etc. Then in later seasons, things got a little lame. Instead of those cool heroes, we got...the Wonder Twins. I never understood why they would allow Zan and Jayna to join the team. I man Zan could only turn into water-based items (like...water or...an icicle). Jayna could only turn into some type of animal. Throw in Gleek and you're just asking for trouble.
Mattel's DC Universe Classic line is featuring the twins in some pretty nifty packaging and exclusive to San Diego Comic-Con, you can get Gleek if you buy the set. That's the only way to get him.
For some reason, I really want to get this, despite my animosity towards them. Thankfully they have Fed Ex on site to ship them home as I don't want to be walking around with a cumbersome package. Check out the video from Matty Collector. It's a little...slow but you can see how the package lights up and has sound clips.