??? (Secret Boss)

??? is the final, secret boss of ??? (Secret Mission Pack). When fighting ???, the track will move and change randomly. ??? has no HP, instead, you must defeat it by other means. It also doesn't move, it will find other ways to defeat you. There are a few phases in this boss fight. ??? Loos like a huge bunch of glitched out letters and numbers and static.

Phase 1: Colour Change
In amongst all the glitchiness, a colour will sometimes appear. Whatever colour it is, a swarm of 50 grouped regen bloons of that colour will appear at the beginning. Also, all towers that are NOT the colour will take 10 HP and 5 grouped regen bloons of that tower's colour will spawn. The colours go from the easier bloons to the harder bloons, although not necesarilly in order of difficulty. After 10 waves of bloons, ??? will explode into millions of pieces, only to reform again.