A side character from [i][[Hataraku Saibou]][/i].

U-4989 is a [[white blood cell (hataraku saibou)|white blood cell]], more specifically a neutrophil, one of the most common types of white blood cells. Like other neutrophils in the series, he has white skin and wears an all white uniform. He works with [[U-1146]] and often acts as comic relief.
u-4989