Toushou Daimos

Mecha genres with similar pain transceiver that sends pulse signal to the pilot, both of them have symbolism about heaven and reliant in battling the extraterrestrial in order for the story to progress, only thing is that Daimos is a bit similar to Shakespeare Romeo and Juliet and focused on Drama and Romance, while NGEs resolution is about a certain project in order for humans consciousness to progress. 

another installment in tadao nagahama's mecha trilogy, i grew up with these in the PI, anyway daimos is more focused on romance of a romeo and juliet type of nature as opposed to voltes v's team-based good vs. evil plot, both are great and still intact is nagahama's own style of old-scool mecha action. 

Quite similar drawings, both animes have interesting fights, and both have nice princess :)