I've been doing a little project lately about all Mass Effect squad members and their stats in the games.
Anyway I'm not sure how much health and shields Legion has in Mass Effect 2. All I know is that Legion can become a Geth Trooper or Assassin if you put put the Geth Infiltrator rank to 4 points and that it can be +15% Health or +20% Health depending on if you choose Geth Trooper or Assassin.
If anyone knows how much shields Legion has and how much health he has at the start. If you could find out this it will be much appreciated.