Subject: Combeferre

Combeferre is a highly practical man. He doesn't have many irrational fears because of this. He learned from a young age that irrational fears were foolish, and that there were things to protect him from those things that other boys his age were afraid of. He had good balance, thus he needn't be afraid of falling. Distance from the ground did not increase the odds of falling, thus no need for a fear of heights. Spiders were often too small to even bite humans, and often there are cures for their venom if they do bite us, thus no need to be frightened of spiders.

He has several practical fears, though. 

Needles, a development from his stint as a medical student, for he knows how easy it is for there to be just a little bit too much air left in the needle and thus cause death.

Speeding, for he has been in an accident himself when he was in a car with his sister while she was speeding.

Fire, for he's watched another sister singe her hair and almost cause herself real harm just from a curling iron. And that wasn't even real flame.

Drowning, for he's never learned to swim, and he can't seem to work out the dynamics of it.

The dark, for he can't see what's coming at him - though he can't always see what's coming at him even in the daylight, really, for his vision is weak.

For all his practical fears, though, there is one impractical fear that Combeferre has never quite been able to get over, despite knowing what causes it and that it's not dangerous. It makes him shaky and nervous, and if he has a friend or a partner in the vicinity, he will wrap around them and demand they hold him until it passes so that he's not alone and he has someone else to keep him safe.