Starship Troopers 3: Marauder
KAMIKAZE BOMBARDIER BUG
The Bombardier Bug, or Kamikaze Bombardier, is a small ball shaped Bug that is fired from an unknown source, then self-destructs. The bombardier has two states; closed state in which it is fired, and the open state in which it self destructs as a grenade.
Bombardier Bugs are first seen on Roku San before its defeat by the Arachnids. Before the Bugs attack the Military assistance base on the Planet, Bombardier Bugs were launched over the Base’s electric fences into the trenches to cause fear and panic amongst the Troopers stationed there. During the assault on the base Bombardier bugs were fired on positions of Troopers before Warrior bugs swarmed them, so as to cause panic and try to rout them. It is pretty much a living grenade. The explosion is big enough to send objects flying towards their targets as seen in Starship Troopers 3: Marauder.