Shin Getter Robo vs. Neo Getter Robo is a oVA anime that premiered in fall 2000, produced by Brain's Base.

About the production: there are 4 episodes of about 27 minutes and its current status is "finished".

Its main genres are action, mecha and sci-fi, with themes such as Super Robot, Dinosaurs, Shounen and Ensemble Cast.

On AniList, Shin Getter Robo vs. Neo Getter Robo has an average score of 72%, a good score, and appears on 3,379 users' lists.

Years after the defeat of the Reptilian Empire, Getter Team has begun training on a new super robot, Neo Getter Robo. But a surprise attack from the Empire's revived leader forces them to recruit a street fighter named Go Ichimonji as Getter One's pilot. Faced with an enormously powerful foe, the new team's only hope for victory may lie in the resurrection of the lost weapon of humanity, Shin Getter Robo. (Source: Anime News Network)

Official synopsis from AniList.