Earth 3's Blue Beetle

In DC's Earth 3 the good guys are bad and the bad guys aren't great.  Events in that world led to the would be heroes turning into villains.  Superman is Ultraman, Wonder Woman is Superwoman, Batman is Owlman, etc.  Not just that but the characters are different sometimes, Green Lantern's version is a sniveling weasel.  His ring is killing him, deforming and mutating his body from the ring up to his neck.

I came up with this idea after I saw Earth 3 once had a Blue Beetle character named Scarab.  Link:
www.comicvine.com/scarab/4005-…
So in my concept this Earth's version of Blue Beetle is actually green.  In this version instead of the Blue Scarab, the Reach sends the Green Scarab to Earth.  This Scarab alien operates differently than the Blue.
Dan Garret, a shady archaeologist, digs up the Scarab and it instantly attaches to him.  He figures out how to use its power and decides to become a crime boss and challenge Ultraman and his Crime Syndicate.  He creates a chainmale costume and is going to be the Green Beetle. 
After a few days, enough time for the attachment to become permanent, the scarab reveals its true self and its true purpose.  It's legs dig deep into Dan's spin, brain, muscles, joints, and so on, taking control of every single part of Dan's body.  What was once Dan Garret is gone, not even the Green Beetle.  Now it is just the Scarab.  The Scarab uses its host as a mindless vessel.  Giving itself a body while also feeding on it over time.  Its less of a symbiotic relationship between host and organism and more of a parasite.  The Scarab is also dangerous because, using a host, it can do all the things that Jaime Reyes the Blue Beetle can do.  Create razor sharp claws, turn its arms into guns or blades, create wings to fly, etc.  While Jaime can hear and understand his Scarab, but we can not, this Scarab uses its host body to talk.  So when Dan talks we hear the Scarab's creepy voice.  And while Jaime can keep control of his body, Dan is gone and the Scarab controls the body now.  But the Scarab saw it would be outmatched on this Earth.  So it went to Ultraman and made a bargain, he would not get in the way of its goals while it would agree to serve Ultraman when he needed it.  Owlman insisted it join the Crime Syndicate and come when they needed its skills.  Over time Dan's body has gotten too close to death and the Scarab might soon need a new host.

I tried to make this version creepy and scary, not usually my thing.