[@The1Rolling1Boy] I just now thought of something that would probably make you geek out even more. Bloodstone and Indicolite are very similar. Marnie's physical form is so close to being corrupted but not quite crossing that line, and Blood is the exact same way mentally. Pair that with the fact that his personality was quite similar to Marnie back when he was a youngling learning the ropes of being a scientist.

Marnie is mini Bloodstone confirmed.