Snitch

From the Cambridge Dictionary:
Snitch (noun):
– someone who secretly tells someone in authority that someone else has done something bad, often in order to cause trouble.

And that also pretty much sums up CMDR Bonquiquis intentions when he secretly brought it to the attention of Wing Command (WC) that CMDR Dave Burn and CMDR Gizoux deserved to have call signs pinned to their names.