I would argue that no "Action Hero" collection is complete without Dell's Nukla series. The "Action Heroes" were the brainchild of Dick Giordano at Charlton and included the likes of a low-power Captain Atom, a revised Blue Beetle, Judomaster, Peacemaker, and Thunderbolt. It was the brightest of moments in Charlton's long history, and one fondly remembered by many fans.
But Sal Trapani and his partner and brother-in-law Dick Giordano also produced the four-issue series for Dell titled Nukla. This project, which looks for all the world like a Charlton comic of the era, showcases the artistic storytelling of Giordano, Trapani, and in the last issue even Steve Ditko. Charlton stalwart Joe Gill scripts each and every issue. (Ironic since Gill and Ditko created Captain Atom for Charlton, who Nukla resembles more than a little.) This comic has all the earmarks of a full-blown Charlton comic, it just happens to have "Dell" in the corner.
For the record, I've always thought that Rocke Mastroserio was at least partially responsible for the artwork on the debut cover, but the original suggests it's the work of Giordano and Trapani. Hmmm.
Check them out Charlton fans. You'll be glad you did.
Here's a sample of what you'll find. This is a great sequence from the debut issue.