Jean-Henri Fabre is the first I-jin to cross Yomiko's path, with interesting results. He was originally a French entomologist, and in Read or Die he is given distinct bug-like characteristics, such as antennae.
Fabre's primary ability is the control of bugs and bug-like robots. Not only does he ride these robots around to terrorize people, but he can control insects to search for things and appears to be able to see through them (in the first episode, he does this with a swarm of bees).
In addition, when he 'dies' he really just molts out of his skin and takes on a new form. Only when Drake destroys his 'heart' is Fabre truly dead.