This looks like so much fun. Never mind I am slightly less than well-versed (read: almost not versed at all XD) in canons that include summons.

Hitsugaya's already got a not-quite summon/partner spirit/great destructive ice dragon of his own, so I doubt he'll be much for taming and keeping things. (Banishing and defeating? Yes please.) He'll definitely want to be a hero-type though, especially with the power cap gone -- Luceti's severely restricted his powers.

Learn to HTML, Kel.