Sounds somewhat similar to a former friend.
He always wanted to play complex, powerful characters with lots of Kewl Powerz, but never put in the effort to know how to use them. At the table, he was an absolute DRAG. Very gregarious and fun to have around, except for the whole GAME part, where when it got to his turn, he hadn't the slightest idea what was going on and would then proceed to very dramatically....take five minutes to carefully research what he was going to do.
THEN, more often than not, the end result of five minutes or more of dramatic sighs, pauses, staring at the board and slowly flipping through his rulebook was to.....move to there and do nothing.
One big battle against a demon and a bunch of lemures, he insisted on leaving his druid flying high (very high) above the battle watching what was going on until we stopped the game cold and told him to get into the battle or pack up and leave. His response was to fly down and land on a wall, and watch from there. Only an "if you don't get in this battle, you can find your own ride home and you never ride with me again" ultimatum got him to enter the battle at the very end, when my character was down to no spells, using a Wand of Magic Missile (1 missile at a time) against an assassin that was busy killing a government minister in front of me. Even then, he balked at actually having his druid wild shape into combat form and get involved, because he might get hit.
He's a former friend for that reason and others.
Look, the hardest thing ever in gaming is to dump bad players who happen to be friends. Because you usually lose them as friends. But seriously, if they act this way in-game, how bad are they out of the game? My advice is to dump the guy from the game, for the sake of you, the other players, and the game.
There is an old expression among paper and pencil gamers: "Paper Soldiers Never Die". Soldiers in simulations act much more suicidal than real soldiers. Enemies attack until they are slaughtered to the last. In the end, it is just a piece of paper. If he is so afraid that something might happen to that character, as the former friend above, then he needs to reconsider WHY THE %$%#$ he is playing the game. Because he's not playing the game. He, like FF above, is only there to socialize.