Giant flies are more massive than the normal variety of flying insects and thus are Aerial Agility: Level III, though they can hover. They do retain a normal fly’s ability to react quickly and thus they can jump away from an attack in only 1 segment. This jumping defensive move is a backward springing leap which carries the giant fly 30-ft away and does not count as a retreat for purposes of a free attack.

This giant insect is even larger than the giant blow fly and far more aggressive. The giant horsefly dines on fresh blood and it will land on any warm-blooded creature is encounters, attempting to draw blood from the target with its bite. Giant horseflies are flat tan and brown in colour, with shiny brown eyes.