I’ve never seen “The Terrifying Mammoth from the Remote World of Visceros” before. It rules, obviously. The alien script is a brilliant touch. I’m not sure the “hydrocannon” is all that terrifying, but you never know, maybe water is deadly to Viscerians (Viscerosians?).
The box art is by Ken Kelly. Check out his Micronauts gallery at Innerspace Online.
2 Warps to Neptune 
I loved my Terraphant! I imagined the water jet as a jet of fire! It was a play-set and rolling tank like terror to whome ever that months comic told of next… maybe Acroyer or Barron karza himself! God the 70’s were a great time to be a kid! I think I am the best generation ever! Gen x mother’fers!!!!