Extra Damage to Frozen is a projectile behavior characterized by dealing more damage than that tower's base damage to Frozen Bloons per hit. It is part of the damage types family.
Extra Damage to Frozen is represented on Bloons Wiki as 
, the upgrade icon for Sai's Fridjitsu in Bloons Adventure Time TD, as it appears to be a shuriken about to penetrate a bloon that it just froze. While most shurikens are considered Sharp 
and cannot damage Frozen Bloons, shurikens with frozen popping from Dagger of Chilled Glass, which is required for Fridjitsu, are able to. Extra Damage to Frozen is simply a subset of Extra Damage 
.
Scientist Gwendolin in Bloons TD Battles 2 deals more damage to Frozen Bloons with all her attacks, including her abilities. However, this is not the case in Bloons TD 6.
In Bloons TD 6, Mermonkey's upgrade Riptide Champion and above, also Silas has bonus damage to Frozen Bloons.
