The BEST episodes written by Taro Kaido
#1 - Who Goes There?
Ultraman - Season 1 - Episode 31
When an agent visiting Japan from the Science Patrol's South American headquarters begins behaving suspiciously, the Science Patrol discovers that he has been infected by an Amazonian blood-sucking creature intent on spreading its evil tendrils throughout the entire world.
#2 - Breach the Wall of Smoke
Ultraman - Season 1 - Episode 21
When Fuji and Hoshino disappear during an investigation near an active volcano, Captain Mura sends the rest of the Science Patrol to find them. Upon arriving, they encounter a poisonous monster too powerful for either their own weapons or Ultraman to defeat on their own!