So... is Dokonjou Gaeru finished or not?
NO, it is not finished.
Why?
We found unfinished non-core content:
Dokonjougaeru no Musume (Spin-Off)
We could not confirm the source content in MangaUpdates.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
Dokonjou Gaeru
ど根性ガエル
Anime - Base
Release date: October 07, 1972
Shin Dokonjou Gaeru
新・ど根性ガエル
Anime - Sequel
Release date: September 07, 1981
Synopsis
Dokonjou Gaeru tells the story of a boy named Hiroshi who has a rather unusual accident.
While battling his rival, Gorillaimo, Hiroshi trips and falls directly onto a frog.
Instead of a squashed amphibian, Hiroshi discovers the frog is not only alive, but it's also quite talkative and introduces itself as Pyonkichi.
The anime seemingly revolves around the bizarre and likely comedic consequences of this fateful encounter.