EngiBloom is an unknown aged earth pony mercenary from the TF2 universe. With that said, mercenaries never age.
EngiBloom has devoted her life to Mercenaric work and does not belong in either the NLR or the SE, but is owner of the MU.
The dispenser is one of Engibloom's vast weapons even though it does literally no damage at all. It can hold as much items as you want due to it being linked to the dispenser database.