User blog comment:Linathan/Birthday Special: Q&A/Ask Linathan!/@comment-99.6.173.236-20150619222303/@comment-26140304-20150620004847

I highly suggest summoning for Colt. Colt provides so much utility for the squad, especially with the fact that he boosts HP by 30% and you're able to deal tons of damage as the lead. You can check his Unit Spotlight here:

Unit Spotlight: Glacier Twin-Blade Colt