Mazinger Z (artist unknown). If you're old enough to remember this TV show from when you were kids, you will remember the thrill of anime before it was big.
anime Voltron Defender of the Universe
VF-1S Strike Valkyrie
Mazinger Z. I think this is where my love of giant mecha began. Art by Nathan Rosario.
The "Other" Voltron
Mazinger Z by Zer013.deviantart.com
Masterpiece Vehicle Voltron Final Production 005