Shemeska
Adventurer
The native subtype wouldn't work, because then the hound archon wouldn't exactly be a hound archon anymore. The native subtype assumes a body/soul duality, which true outsiders lack by their very definition.
If you want a hound archon, or other true outsider PC to be safe from banishment, ask the DM to involve some random MacGuffin, or some plot intwined backhistory that the PC may or may not understand (old summoning that ended in horrible failure caused a magical backlash that has tied the PC to the prime material in an uncertain way, always calling him back due to the frayed remnants of that old summons, etc etc etc detail as you wish).
I had a lupinal PC in my last campaign and banishment was never much an issue (she was banished twice in three years of gaming). I had another outsider PC (a guardinal/yugoloth crossbreed, long story) who so far has been banished once in about two years of gaming, so it's not been a gigantic problem.
And there's always disguising what you look like so enemies don't know what you are to know to try to banish you in the first place.
If you want a hound archon, or other true outsider PC to be safe from banishment, ask the DM to involve some random MacGuffin, or some plot intwined backhistory that the PC may or may not understand (old summoning that ended in horrible failure caused a magical backlash that has tied the PC to the prime material in an uncertain way, always calling him back due to the frayed remnants of that old summons, etc etc etc detail as you wish).
I had a lupinal PC in my last campaign and banishment was never much an issue (she was banished twice in three years of gaming). I had another outsider PC (a guardinal/yugoloth crossbreed, long story) who so far has been banished once in about two years of gaming, so it's not been a gigantic problem.
And there's always disguising what you look like so enemies don't know what you are to know to try to banish you in the first place.