Orange Fleepa
(http://cdn.wikimg.net/strategywiki/images/8/84/Orange_Fleepa.PNG)
He shoots 10 missiles in a row
Blue Zibzub
(http://cdn.wikimg.net/strategywiki/images/1/1e/Blue_Zibzub.PNG)
Shoots 3 blue missiles
Orange Grimgrin
(http://cdn.wikimg.net/strategywiki/images/d/da/Grimgrin.PNG)
Shoots the skulls at you and the missiles in Area 9 and 10. When he loses all his eyes, more skull drops down, make it harder to dodge.
Green Zibzub
(http://cdn.wikimg.net/strategywiki/images/f/f6/Green_Zibzub.PNG)
He shoots 3 green missiles
I'd made orange fleepa shoot also direct(like optomon does) bullets+missiles.
And ZibZubs too. So it would not be possible to just make him silly jump around you. Or maybe a lazer like Clawbot does. Other ZibZub could shoot homing eyes.
Pretty good idea, though. Actually, green missiles are difficult enough.