Godzilla

Godzilla (ゴジラ, Gojira) Is a monster that did not appear in any Ultra series. However, Mosugoji's roar can be heard in the part one finale of Ultraseven.

Trivia

 * Godzilla's costume was used in Ultra Q for the monster Gomess.
 * His costume was also used in Ultraman as Jirass.
 * Godzilla's iconic roar can be heard in Dan Moroboshi's flashback in Ultraseven.