User blog comment:JediSpectre117/Regarding the surviving Prothean./@comment-4491632-20120222173909

The Prothean doesn't look *that* much like a Collector. They have a similar head-crest and four eyes, but the lower half of their face looks much too different. Besides, Shepard accepted Legion, didn't s/he? Legion looks more Geth than the Prothean does Collector.

My theory is that the Prothean's were possibly a very religious species, and that the "tentacle man sitting on a chair" is some kind of highly important religious icon. Their god, most likely, or possibly their equivalent of an angel... something along those lines. You know what I mean.