Leech was a Vanduul ace pilot. He was recreated in the Vanduul Swarm Simulation in Arena Commander as an enemy.[1]
"As many strategists will tell you, when an attack is launched can be more important than how it is launched. Leech is one of the rare Vanduul pilots who would take time to survey a battle before deciding when and how to engage. It was this methodology that led to one of the longest active stretches of a Vanduul pilot. While it's known that the Vanduul have little regard for the loss of life (even their own), Leech seemed to act purely on strategic instinct. It would abandon fights if it deemed them 'unwinnable,' but if Leech committed and latched onto a pilot's six, It never gave up."
Arena Commander Manual
