There is someone older than me on the ship! Well, I am rather surprised.

I apologize. It does not seem to be a well-accepted habit here on the ship, however I assure you it is merely a term of kindness and endearment. If you do not desire me to speak to you or Sokka so, than I shall refrain from such.

I do not doubt either of your skills. Our cultures are likely merely different. It is not uncommon for an older vampire to call all who they meet 'little one', and is not considered an insult if you are older, but considered to be a sign that the person views you as still being quite alive rather than getting close to a time where you are old and tired of life.