My two cats have different personalities. Umi is a little anti-social. She would rather sit by herself than be with other people or Tsuru. However, Umi answers when I call. She can even carry a conversation with me when she feels like it.
Tsuru on the other hand is very different. She is my doggie-cat, meaning she will follow me everywhere I go and will sit next to me, she is my constant companion whenever I'm home.