Grey Goo thingy

Grey goo is the 9th hero in BTD 6 (or, if you will allow me, BTD 7: PotA. He is the second melee hero from BTD 6. For each Bloon he eats, he gets bigger and gets more HP and damage. So not like most heroes, as he levels up while popping bloons and not after a round. His upgrades aren’t definite (and he also has endless upgrades!), but it has 3 definite upgrades: at 3 meters, he can give the player another chance if they lose. At 7 decimeters, he can spin with his body. At the size of a True Sun God, he can use the “All The Way Down“ ability. Also, when he is the same size as a true sun god, his size never changes graphically, because of... well... lag. At least the counter changes to the amount it’s size is! Also, it has to be 3 parsecs to eat an E.M.P.E.R.O.R. for a hundredth of it’s HP.

Quotes
“Woopa!” used when happy in cutscenes and tapped. (similar to the Greek saying ”opa!”)

”Oaaa!/Oaaa...” used when scared or sad in a cutscene or damaged.

”Nom... Nom!/Mmmm.../Yummy!“ used when eating in cutscenes and battle.

”Ouch/Aa!” used when damaged. Aa! Is also used when he’s crying or getting sucked into V01D 0F H3LL.