Who's the Enclave member who has that really tall armor? I'm currently playing Fallout 2 and trying to reach the Poseidon Oil Rig. Do you have to face him at the Oil Rig?

Yes his name is Frank Horrigan. http://fallout.wikia.com/wiki/Enclave_Oil_Rig

And he's one bad mother ******.

yah hes a bad ass but theres a glitch on the oil rig that luts you get 10-15 extra levels makes the fight really easy. has to happen when your talking to the lady or what that doctor guy should google it.

you also get his weapon and once its outta ammo its gone... but its a rediculous weapon.