She is called a mini version of the killer maid. Fabiola has most of the same mannerisms as Roberta, which includes using kind words. She is often made fun of because of her size and how she generally does childish things. She first appeared in Roanapur to seek out Rock for help in the retrieval of Roberta. Fabiola in battle uses a pump action China Lake Natic, MAG 7s and a shoe knife. Fabiola also uses a self-taught capoeira, which she combines with her gunplay.
In the Anime OVAs and the missing pages of Chapter 76, after Garcia "kills" Caxton, Roberta and incidentally himself,Rock reveals it was actually his plan, so he could save someone. Enraged, Fabiola shoots him with a fake bullet.
- In issue #55, it's revealed that she loves swimming but tried to hide it from everyone because she was too nervous to admit it.
- In issue #48, even though she is good at using weapons and can kill people mercilessly, she still shakes in fear after she has killed someone (Which means she was not a natural born killer.).
- In issue #60, it's revealed that she doesn't like killing someone (She couldn't kill an injured soldier and became enraged when she saw Revy kill a wounded soldier mercilessly ).