It's not just possible, it was a tier, and is likely to be why EZA references are in the game. See this thread on Giant Bomb's forums where a backer wanted help designing an NPC/reference to Giant Bomb 3 years ago:
https://www.giantbomb.com/indivisible/3030-50246/forums/help-design-an-npc-for-indivisible-1785795/
EDIT: Scroll down on the Indiegogo page and you'll find this:
'NO LONGER AVAILABLE: Patron Saint
$1000: Patron Tier + Design an NPC
Work with the team to design a townsperson or other NPC and write their dialogue! Keep in mind, that whatever is made needs to fit the game. As a bonus, you'll also get Steam codes for 505 Games' How to Survive and Brothers: A Tale of Two Sons!
For a limited time, all backers at this tier and above will also get a second Lab Zero Games "Test Subject" t-shirt!"