Farewell, Taro! The Mother of Ultra! is the fifty-third and final episode of Ultraman Taro.
Kotaro gave the Ultra Badge back to the Lady in Green, separating from Ultraman Taro. However, not long after he separated from Taro, Alien Valky attacked Tokyo by surprise to get his revenge on Ultraman Taro, without knowing Kotaro had been separated from him. Kotaro fought him with his own human abilities and managed to defeat him by blowing up a nearby gas tank. After that, he left ZAT to pursue his dream of becoming a professional boxer.
- Saburo Shinoda (篠田三郎 Shinoda Saburo): Kotaro Higashi/Ultraman Taro (voice)
- Peggy Hayama (ペギー葉山 Pegī Hayama): The Lady in Green/Mother of Ultra (voice)
- Shinya Kashima (鹿島信哉 Kashima Shinya): Alien Valky (バルキー星人 Baruky Seijin)
- Ultraman Taro Volume 13 features episodes 50-53.
- This episode was later featured in Ultraman Retsuden episode 149 "The Final Battle! Farewell Taro! The Mother of Ultra!".
- This episode marks the last time Saburo Shinoda reprised his role as Kotaro Higashi and Ultraman Taro's voice actor, as well as Peggy Hayama's roles of The Lady in Green and Mother of Ultra's voice. It also marks their final appearance in the Ultraman Series franchise as a whole, the latter having passed away in 2017.
- This is the first final episode which an alien defeated without any help of the main Ultra.