Concept Art: Wildstar Engineer Diminisher Bot by Koryface on DeviantArt
Concept art: Alexandre-concepts-robothero.jpg (3062×1542) (wildfactor.net)
Concept Art: ArtStation – Star Citizen – KRF Kiosk and Info Terminal
These three are considerably old and somewhat off model from the reference images. I may personally try to fix them up a bit more in my free time. More to come in the future!