(Amazing-Man Comics 021, 1941)
A single-appearance hero notable for two reasons:
1) His name is Treve N. Thorndike and he got his super-hero name because he was careless enough to wear a belt with his initials on it while crimefighting (in his mild defense the more well-known super-hero named TNT also has those initials – maybe it’s a compulsion associated with having a cool name)
2) TNT carries a gun that is powered by atomic fission but he mostly uses it like a regular pistol except for one time when he shoots a goon’s bullets out of the air.
As with all one-off super-heroes it’s a toss-up whether he chose not to continue adventuring after one success or was immediately shot dead the next time he set out.