Another Classic Golden Age hero, the Red Torpedo is actually a frustrated inventor. Check it out:

Neat, right? Except wait-a-minute…

“Too fantastic”? It’s a submarine. What’s so fantastic?
I mean yeah, eventually we learn it can fly and shoot lasers and even go on land, but the basic concept is kind of solid.
Also? I’d love to see a story where Captain Wells walks around telling everyone the Red Torpedo must be Lockhart. Way to keep your ID secret Jim. You could have at least changed the color…