As Ellri wants it to last longer, suggested traits:

Strengths:
Extreme Strength
Thermal Vision (Also using sense of smell and taste to give it a good idea what's going on)
Thick Scales: Scales making it impervious to most forms of standard attack, crushing and stabbing unless someones really smart about it.

Weaknesses:
Heavy: Due to its thick scales it's quite heavy, swimming and climbing some structures are completely out of the question.
Conditioned: Due to it being conditioned by more than one Inquisitor if you know the keywords you can effectively take control as long as it does not contradict its conditioning.

Primal: This is neither a strength or a weakness, as it can fall under both.