Analog-TV
Keith Richards? (Cannot be killed by conventional methods.)
Nodwick…
well, okay it’s not so much Nodwick is unkillable, he just keeps coming back.
Sully.
ETA: Because he is a cool cat.
Jason Vorhees.
Phil Connors, from Groundhog Day.
Captain Jack from Dr Who. Or Face of Boe, who he became eventually.
If you want Biblical and unkillable, it has to be Jesus. 
I have a b/w cat who has a little white milk mustache on his black face. His name is got milk?
That goes over big at the vet’s office. 
As for name suggestions, I can only come up with Lazarus.
Well, since he survived the cold, I’d have to call him Chili (Chilly).
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Also Meshach, Shadrach, and Abednego, although survived the Fiery Furnace rather than freezing.
Perhaps better is Michael Malloy, who was nearly as indestructible as Rasputin, surviving freezing, poisoning, and being run over by a taxi as part of a murder plot against him to collect life insurance.
Terminator? (Nate for short?)
Kudzu?
On a different note, “Lucky” is a name commonly used for pets who are, for whatever reason, lucky to be alive. (We have a cat named Lucky who was born a stray and was picked up by a rescuer after her mom died.)
Along similar lines, how about “Centruroides sculpturatus?”
:eek:
How did I not know about Michael Malloy? That’s a definite suggestion, and, probably, a new personal hero.
“Fridge” - he was pretty damn unstoppable when he played for Da Bears back in the day.
And no kitty pics?
Rasputin is my kitty’s name. It gets shortened to “Rass” too easily.
What is wrong with you people!
Two pages, and NO “Chuck Norris” yet?
I’m deeply ashamed.
Crabgrass. You could call him Crabby.
Or Bindweed.
Of all these, I think I like “U.S. Federal Sugar Subsidy Program” best; you could shorten it to “Sugar” if the length bothered you. 