Basically it's a boss that is twice the size of 1 Roarmulus Twin and it has more weapons. The field is the size of Royal Jelly's throne. Roarmega is North of the field.
The battle starts after all party members press the button. Then 4 Gremlin-mounted howitzers (not to be mistaken by howlitzers) will appear and start shooting slow moving missiles at you (it blows up after a certain length of time). Roarmega will also summon 5 Scuttlebots to annoy you.
You and your party are supposed to destroy the gremlins mounting the howitzers. Then you are able to mount the howitzer and start moving around with it(the speed is half the speed of a regular knight's movement).
Once the gremlins are destroyed Roarmega starts to attack. Roarmega's attacks consist of missiles (twice as fast as a regular missile) and 2 laser beams.
The missiles launches from Roarmega's shoulders (2 per shoulder), it's chest(5 missiles shot), and 2 giant missiles from it's back(each missile will target a random player's last position and they have 3 seconds to get out of there because the explosion radius takes up a mediocre amount of space).
Each missile will do 4 bars of damage. But when mounted on the howitzer, it will reduce the missile's damage by half.

To deal damage to Roarmega, Roarmega will shoot it's laser beams (it will show where the laser beams will go), but it takes 10 seconds for it to charge up, so it will summon 5 Scuttlebots before it charges. You must position your mounted howizter so the laser beam will hit the howitzer in it's back.
Your howitzer will now be charged for one shot of it's main cannon but you must turn your howitzer around first. The screen will take you to a 1st-person type of perspective with a target in the middle (that will tell you where the shot will go to) and it can show you how much health Roarmega has left. When you shoot you have damaged Roarmega and if you shot it's shoulders or chest the weapon that corresponds to it is disabled for 5 seconds.The howitzer also has 2 secondary weapons, a blaster (same speed as autogun)(used for taking out Scuttlebots)(cannot damage Roarmega), a slow moving missile that can damage Roarmega (can disable it's weapons)(15 second cooldown), and a shield...for blocking stuff.

Requirements:Must defeat Roarmulus Twins at least once (it's ironic cause i never beaten them yet :S)

Repeat the process to defeat Roarmega.

Tell me your opinions on this boss :D