He looks a lot like Raptor but with inverted colors, for not beeing smart like his relatives he can not talk, but instead he can roar like ordinary Utahraptors.
A failled atempt to create Raptor. This Raptor relative was intended to help Space Raptor and Mecha Raptor II to capture Raptor, but Reptar's instincts took over, so he went insane and destroed everything in his path, he was was captured by Space Raptor and Mecha Raptor II and sent to Earth where he met Raptor. Once they battled once for supremacy (Reptar thought Raptor was some sort of alpha and he coud claim his "territory").
Reptar is as fast as an Utahraptor.
- Blue Spiral Beam
Like every Godzilla can do Reptar can shoot a blue beam out of his mouth in the Godzilla form.
Yes Reptar can become all those bosses from ARK.
- Indominus Rex
Yet again, yes Reptar can become an Indominus.
And Reptar can also become the Wyvern from ARK.