Sketchesaurus Rex 

Someone who is extremely sketchy and suspicious.

Ezra Fitz on Pretty Little Liars is so shady. He's a Sketchesaurus Rex.

Sketchesaurus Rex by EPalms June 28, 2015

Sketchasaurous-rex 

1. (adj.) a describing term for some who is all too entirely illegitimate in both their appearance and conduct.

ex. 1. Look at that sketchasaurous-rex over there!

ex. 2. It looks like we should go. Sketchasaurous-rex just walked in the door.

Sketchasaurous-rex by Diggin11 June 28, 2009