I've looked through some threads before on here and other websites and during battles there was a form of Ikaris that was referred to as the Prime Eternal, can anyone clear this up for me? much appreciated if so.

Basically, the leader of the Eternals if that's what you're asking...

" Basically, the leader of the Eternals if that's what you're asking... "

No prob.

Ikaris became the Prime Eternal for a time after Thena was deposed.  Thena had assumed the role after her father, Zuras had been slain in battle with the Celestials (in Thor #300).  It seems that a higher level of power is implied by having this rank, though no higher level has been depicted to my knowledge.

Ikaris is currently the leader but Zuras is back

Prime eternal means you can set up the uni-mind plus an amp apparently