After reading this new R.E.B.E.L.S. series and taking in this new interpretation of Starro, I think I've come to a realization as to why I think Starro the Barbarian is a lame idea.
I know some people would read the reasoning behind this new Starro and compare it to Geoff Johns' introduction of the "true" Brainiac in Action Comics. Mainly because they both contain the line about never meeting the true (insert name). And while Johns has the benefit of using that reasoning first, it's not the only reason I accept the new Brainiac and not Starro.
If you look at the history of Brainiac, it can be seen that his physical form has never been dealt with, especially in Superman's case. Post Crisis, Brainiac shows up having taking over the body of carny Milton Fine. It could be said that the real Vril Dox escaped whatever imprisonment the Coluans had for him and he only restructured Fine's mind as a backup plan. Even the late 80's huge brained version of Brainiac was a engineered body created by Lex Luthor. With the many later Brainiacs(which apparently gets up to 13), the fact that some original body of Brainiac never actually showed up on Earth is easy to take. The universe is vast and he had lots of other planets to city-jack so he had surrogates to help speed things up.
In Starro's case, in every earlier appearance, he(it?) is a giant starfish. Even in JLA, we're introduced to another member of Starro's race and it's a ginormous starfish as well. But now, it's revealed that Starro isn't the giant starfish spewing smaller starfish on people's faces, it's this steroid-upped space viking who carries around a giant axe. This "real" Starro recruits certain aliens allowing them a measure of freewill to run his campaigns, much different from Starro's plans which all seem to be him planting himself in a bay and throwing starfish on bewildered fisherman.
To say this guy is the true Starro, and not some guy who managed to control Starro or a body Starro decided to hang on to, changes the character fundamentally and comes way out of left field. I'm interested to get the final explanation for this interpretation, but between Bedard using Johns' idea and taking ideas straight out of Annihilation:Conquest, R.E.B.E.L.S. may not stay on my pull list.