- last post: 01.01.0001 12:00 AM PDT
The scarab on Halo 2 is a mining scarab. The reason they brought the mining scarab and not the combat/assault scarab is because they didn't expect humanity on Earth, partially to the fact that they had just gotten done mining on Reach, returned to Joyous Exultation, and left for Earth right when the NOVA bomb blew up half the planet and well over 300 Elite-controlled ships. The Covenant originally came to Earth searching for Forerunner artifacts. the mining scarab is infantry controlled because they can actually see and dig accordingly.
The combat scarab is made up of Lekgolo because it was a good idea at the time. Either that or the MgaLekgolo was so useful, they decided to add more worms to a bigger suit of armor; a scarab variant.
[Edited on 08.17.2009 8:27 AM PDT]