He spends such a long period as a human that his psychology begins to change.
So, the transformation is far more than just a surface-level change.
Both times, he uses the Alien Ball technology to assist him in the change.

If Harry’s skill in combat wasn’t enough, he also heals incredibly quickly.
There are two especially prominent examples of Harry’s use of this power.
However,Resident Alienproves that Harry’s species' DNA is compatible with the human genome.

Custom Image by Yailin Chacon
Bridget’s mother, Violinda Darvell, is played by Maxim Roy.
Resident Aliendoubles down on its alien/human genetic compatibility with the introduction of the Grey/human hybrids.
Appearances can be deceiving, though.

Image via SyFy
If it weren’t for Harry’s immense intellect, huge portions of the story wouldn’t have happened.
Without him,Resident Alienwould have been over very quickly.



Image via SyFy




