Biollante:
http://www.tohokingdom.com/kaiju/biollante.htm#f
VERSUS
Hedorah (Showa):
http://www.tohokingdom.com/kaiju/hedorah_showa.htm#71
Hedorah scaled to 120 meters (double his Showa height, just like Goji was 100m, twice his showa height)
No retreats: Hedorah cannot fly away or change forms, and Biollante cannot revert to spores.
ARENA: Tokyo ruins from the climax of Final Wars.
This is a tough one for me to decide. Hedorah has an extraordinary ability to stay hydrated, but it does say here that Biollante’s acid sap can eat through diamond. It might be enough to turn the tides, but I’m not sure. Showa Hedorah could burn through Showa Goji’s flesh, but I’m not sure if Showa Goji’s regeneration is on-par with heisei Goji, and by extension, Biollante’s. I guess it would go without saying that it's hard for me to gauge the effectiveness of Biollante's tendrils if they incinerate upon piercing Hedorah's body.
I’ll abstain for now, and I’ll wait and see what others have to say before I decide.



