Curse of the Blood Rubies, Yamcha has a gorgeous introduction where he jumps forward with the moon behind him.

Source: https://www.cbr.com/greatest-dragon-ball-character-introductions-ranked/

Since then, Yamcha has seemingly given up trying to keep up with the other Z Fighters in terms of power, and is currently barely a member of the squad as his last notable contribution was during a baseball game in a filler episode of the anime.

Source: https://screenrant.com/dragon-ball-goku-and-trunks-prove-yamcha-is-terribe/

Soon enough, Yamcha and Bulma were fighting non-stop, sometimes even getting physical with each other.

Source: https://www.cbr.com/worst-shonen-anime-couples-ranked/