Okay, so I did some research.
As a hybrid ranger, I can take the Hybrid Talent feat to get the Beastmaster ranger path ability.
Which is an animal companion with a permanent -1 to attacks and defenses - *but* can be a bear!
. . . The problem is, the beast powers in Martial Power 1 are all with the expectation that you're in melee fighting alongside your companion, not a ranged shooter like Galadren. And to get the bear to do anything, I'd need to take one of the Beast at-will powers, which would consume the one Ranger At-will that I have currently.
It's definitely a sub-optimal choice simply because of the melee focus of most of the powers, and I would need to take it at level 4 because I need to take Superior Crossbow at level 2 so that I can finally make use of that nice magic crossbow we got, which will free up my minor actions instead of *having* to use them to Reload all the damn time.
But if you guys *really* want that Tactical Assault Bear, it is possible within the rules.