Ningyo is a minor fictional character associated with Dragon Ball, appearing as a mermaid-like figure rather than a major combatant or central cast member. The character is part of the series’ broad world of unusual creatures and comedic side characters, helping showcase the strange and whimsical variety of beings that exist in the Dragon Ball universe. Ningyo does not play a significant role in the main plot or major battles, but serves as a background or incidental character that adds flavor to the setting.