With a Frightening Intellect..

CUNNING, n.; The faculty that distinguishes a weak animal or person from a strong one.


Iscer with his usual form (front & center), his compressed form, like that of Freiza's 1st 'form' (bottom right), and his final, Hell form (top right, obviously). FULL VIEW OR DEATH!!! o.0

For those unaware, Freeza's transformations were "because (he) has trouble controlling (his) immense power" without changing his form. Iscer, far more intelligent and in control than his deceased 'cousin', does not share that problem.
When necessary to compress his battle power all the way to a zero reading, he can compress his form into one like that of Freeza's 1st 'base' form (but other than that, this form is rarely used).
His normal form, which he is found in most often, suits him well-- small, lightning-quick, and easily capable of accessing his reserves of power.
His 'Hell' form is one he has taken very few times, for it's said that once he has taken it, the universe itself quakes with fear... It's rumored that this power is what intimidated Kooler into pushing his limits enough to reach a similar transformation.