Doopy the omicron Doople; science fiction vehicles in the Rocket McGee Series for kids, Rocket McGee:Back in Trouble! Book Two. Doopy is an omicron Doople.

Copyrighted Material from Rocket McGee: Back In Trouble!: “That name came from duple, a word meaning double or having two parts. Dooples were like deep-dive atmospheric exosuits, like the one developed in Canada by Nuytco Research Limited, complete with working arms and legs, except that a Doople was about twelve meters tall and had a double cockpit where an exosuit’s helmet or viewport would be.
The so-called double cockpit was actually two separate one-person mini-subs set side-by-side atop the Doople’s shoulders. They could detach from the main body for independent operation and either one of them could drive the Doople by itself. Inside the duple cockpit, it looked like the two capsules were joined into a single, larger cockpit, but that was just a holographic illusion created on the mini-subs’ interior panels.”