discrepancy

truthfully nobody knows right now. we started with diabolus and then somoene brought up indominus. dont know if diabolus is the one were getting in the film and indominus is a toy. we just dont know

D-Rex is the animal in the movie and is legit. I think I-Rex is just a rumor/fan made dinosaur.

So far, It's believed that "Indominus" isn't actually a thing, And is simply a rumour started by fans for no known reason. We do however know that there is an Hybrid in the park. 

Diabolus Rex, loosely translates over to "Devil King" Or "Demon King".

It was hard Discerning what Indominus was, However, My current Translation is something along the lines of "No one is master" Or "No master king" Something like that.

As dominus means Owner, And In means none. 

Indominus rex sounds cool, But makes no sense.

Diabolus, However, That makes sense. 

Actually Indominus is a varient of "Indomitable" which means "impossible to subdue or defeat."  But yeah I've been hearing both names, and I'm confused.  I'm wondering if Diabolus is the same idea as "Patel Corp," a name thought to be accurate but changed more recently.

No, D-Rex is still it. Indominus has been around as long as Diablolus, so it's nothing new.

what about VRex on Skull Island.....