Catcher and Helen working together in order to kill two of the Ghosts assailing them.
Lillian managing, with some instruction, to patch up Mary enough that she doesn't end up bleeding out from the knife wound inflicted on her last chapter.
Lillian and Sylvester cooperating in Bleeding Edge 8.7 to completely fool the Fishmonger, arm Sy with his poisonous blood, and give Gordon a chance to act.
Sylvester emulating Helen to kill the second younger twin in Counting Sheep 9.13
Sylvester getting revenge on the Baron Richmond for stabbing out his eye by killing him via an overdose of Wyvern injected right through the eye.
Throughout the whole of Arc 13 we see Sy from the POV of the other Lambs who are trying to capture him after his defection. Sy, soaring on his months of freedom, has had time to prepare the city for the confrontation, and has essentially turned the place into the perfect playground for him to do what he does best. Seeing Sy through the eyes of those desperately (and somewhat hopelessly) trying to predict and outmanoeuvre him, we see a tauntingly playful,Crazy-Prepared, Lovable RogueMagnificent Bastard in all his glory.
In 14.4, Sy has been captured by hostile nobles and is en route to an uncertain fate, and has only lasted this long by telling them that the Lord Infante is expecting him, which the nobles are almost certain is a lie but don't dare kill him in case it's true. On his way there, the convoy gets ambushed by Mauer's snipers, and many of the nobles are slaughtered]]. Sy finds a noble who was shot non-fatally before getting to cover, and, with bullets still flying around them, says "The Infante is expecting us. This is really very inconvenient, my lord." He then checks that no one is looking before literally kicking the noble out of his safe spot to get his head blown off. While Sy has beaten nobles before, this is the first time he's been able to snark beforehand, and he makes it count.
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