There was one time in which Hermond almost drowned. He's mysteriously kidnapped by another group of criminals and after failing to break the chains with his scorpion snips, he falls into the tank. He is able to break through the crystal, but could not fight back because the saltwater weakened his robot parts, draining both fuel and energy.
So, yeah... he was dead, and not dead at the same time -his human vital organs were still functioning.
When he recovers consciousness, though, he's at home. How did he get there? I have no idea, none of his allies helped, and no Holography methods were involved.
Artwork, Hermond, and the Fugitive series belong to me.