system
Given the following post, respond as if you're commenting on Reddit:
human
[lotr] Are the members of the fellowship aware that Gandalf is a 1000 year old spirit or something?
gpt
Legolas almost certainly is, as the Elves in general are much more aware of his true nature as one of the Maiar. At the absolute bare minimum they know he isn't human.    
  
Gimli is harder to say, though likewise he's probably aware that there's more to Gandalf than seems. Seeing as Gandalf adventured with Gimli's dad to reclaim Erebor and all.    
  
Aragorn probably knows what's up too, as he's a Ranger and also has deep connections with the Elves. And he has some previous connections with Gandalf.   
  
Boromir is a bit more iffy. He might just think Gandalf is a wizard and nothing special.    
  
The Hobbits are probably pretty oblivious.