H.I.L.L

The H.I.L.L is a Hilarious Indivisual who Loves Life, the easiest boss of BTDRN, he doesn't even wound the towers!

Backstory
HILL is the younger brother of HELL, even though they aren't technically brothers as they were made from a Bloon factory in the same production line.

Back then, there were a lot of differences between HILL and HELL, one of them being that HILL looked more fresh and less rusty.

HILL often entertains the bloon kind by thinking of some jokes influenced by bloon humor, HILL deems to be friendly with bloons and help them through the way. HELL however, had different thoughts on a different side.

HELL's hatred of monkeys made him command the entire bloon army to go in war with the monkeys, leading up stress from HILL, who didn't want any bloons to be popping trying to remain victorious. So HILL had to made 1 of 2 choices: Help the bloons in war or Stay in place in a potential world of popped bloons. Without thinking, HILL went out to war with the bloons, landing him in the place he is in right now.

Easy
"I guess I'll go easy on you guys, I promise!"

- HILL

On Easy mode, HILL purposely slows down his jets and rusts his exoskeleton. Leaving him at 500 HP and 0.5 BPS + No regeneration.

However, he still has a unique special:

Layer aid: All bloons within a 30 unit range gain +1 layer, up to Ceramics.

He uses this special every 15 seconds.

Medium
"If this hurts, then I won't!"

On Medium, HILL doesn't change anything, he has 650 HP, 0.7 BPS and regenerates 5 HP every second!

His layer aid attack reaches a 35 unit range and can upgrade bloons up to MOABs. Still uses they ability every 15 seconds.

Hard
"I guess I gotta try harder to help these bloons!"

On Hard, HILL polishes his exoskeleton and boosts his jets, providing 800 HP and 0.9 BPS. Also regenerates 10 HP every second!

Layer aid now upgrades bloons to BFBs at highest!

HILL also gets a new ability:

Regenerate: Heals 50 HP for itself and nearby MOAB-class bloons (At least 50 units in range), all other bloons gain the regrow property.

HILL uses regenerate every 2nd time.

Impoppable / OHNO
"Time to show these bloons mercy!"

HILL slows down his jets just to gain more time to aid bloons, also reinforces himself, as he becomes FORTIFIED!

0.5 BPS and 1,300 HP + Heals 20 HP every second. Good luck.

Layer aid provides +2 layers over a wider range (40 units)

Regenerate heals HILL by 100 HP, nearby MOAB-class by 200 HP!