Blood Type
From Blaseball Wiki
Blood Type is a Stat revealed by the Interviews held by every player in the league. It is currently unknown what blood type does mechanically for players but some suspect it may be related to the Bloodrain and may have some effect on Blooddrain.
The current Types of Blood Players have been known to have include:
A
AAA
AA
Acidic
Basic
O
O No
H\u20820
Electric
Love
Fire
Psychic
And Grass.