The Bloons Empire's B Project Jet Bomber Mark V (or just Mk. V for short) is the boss of the 20xx Special Mission. It has 250,000 HP/Max HP, moves as fast as a Yellow Bloon, it contins 4 special Mk. IV , It regains the camo status and all the abilities of the Mk. IV, but it can now regenerate 250 HP per second and also shoot I.G.B.M.s like the G.U.N. and it's also got a brand new abilities:
- Tesla Canons: Shoot 4 lightings to 4 nearest towers (each "canon" can actually shoot 2 lightings!) These lightnings deal 20HP damege each and can stun the affected towers for 5 seconds, can also break Level 1 Shield
- The Mk. V, codenamed "Reaper", was developed right after the G.U.N's first flight as an upgrade to the Mk. IV.
- It's been developed totally in secret by Apopalypse Bloon. After he's seen the great power of the G.U.N. and the impressive speed of the T.U.R.B.O., he instantly thought of the crazy idea to combine all the stolen tech used to create the Mk. IV with the current bloons tech used for other weapons to fulfill his dream of the ultimate war machine. He then moved the Mk. IV to his basement, then secretly installed the G.U.N.'s canon, the upgraded T.U.R.B.O. Plasmos thrusters, some RegMat shards and tesla guns he recently researched himself (which he's got the technology for that from a certain mysterious bloon god) to the Mk. IV, and thus the Mk. V was born.
- A semi-blimp unknown to monkeys nor bloons, developed even more secretly than the Mk. IV, no one in the world was aware of that, until some Red Bloons reported that they've seen "something far more powerful than everything else they've seen". Some didn't believe them, the others ran around in chaos, remembering what they did to make the Mk. IV. The bloons empire has never been this chaotic from a rumor before!
- It's also unknown when will Apopalypse Bloon deploy this, but the monkeys better be prepared...