2nd Circle Demon to Take on the Lion's Army

In the upcoming conclusion of the game I'm in, my character's circle is going to be facing down the Lion at the walls of Chiaroscuro. I have the opportunity to summon a second circle demon for the first time, and I'm looking for suggestions.

If you could summon one second circle demon to help out against the Legion Sanguinary, who would you call?

There's no narrative reason to go with any demon over any other, so it really is a matter of which is best suited for helping to even the odds against the biggest army in Creation?