Kiteretsu Encyclopedia is a tV series anime that premiered in spring 1988, produced by Studio Gallop.

About the production: the story comes from a manga, there are 331 episodes of about 25 minutes and its current status is "finished".

Its main genres are comedy, drama and slice of life, with themes such as Kids.

On AniList, Kiteretsu Encyclopedia has an average score of 67%, a good score, and appears on 2,490 users' lists.

The main character is a scientific genius boy named Kiteretsu, who has built a companion robot named Korosuke. He frequently travels in time with his friends and Korosuke in the time machine he built. Miyoko is a girl in his neighborhood who is basically his girlfriend. Tongari is his rival, who happen to share some similar traits of Honekawa Suneo. Buta Gorilla (Kumada Kaoru) is a typical neighborhood bully, who also share similar traits of Gian (Takeshi Goda) except that he often antagonizes Korosuke (though they are in grade school). (Source: Wikipedia)

Official synopsis from AniList.