For the fist comment.. I have only died twice, and both was bc i fell off a roof on the house i was making and had not eaten any food

Regarding Odin i just saw him for the 10th time in my current game he appears randomly, ive seen him in every biome so far but the plains as i do not spend much time there yet.
He just showed hims self when i got raided by those Surtlings! I got a heart attack! He does really look like the grim reaper!
He also showed up when i fought a Wraith, again giving me a heart attack...
That sneaky bastard, Odin