Blanc's celebrity friends show genuine concern towards him when he's hanging out with them on Zoom and ask if he's okay, mentioning that Phillip told them that something was up with him.
Blanc is every bit as supportive of Helen as he was of Marta in the previous film, and he does everything in his power to ensure that their plan to get justice for Andi succeeds. Even when Miles incinerates the evidence they had worked so diligently to collect and seems poised to get away with his crimes, Blanc gives Helen the encouragement she needs to quite literally blow everything up in the murderous billionaire's face.
When Helen is shot, Blanc sniffles and looks like he's about to cry before she reveals herself to be alive.
Helen, seeing firsthand what a jerkass Duke is, quietly advises Whiskey to dump him. Later, when she finds Whiskey crying and saying she "left" Duke (unbeknownst to Helen, referring to his death), she assumes Whiskey took her advice and immediately tries to console her, telling her she's better off without him and she has nothing to feel sorry for. Too bad this makes Whiskey think "Andi" is the murderer.
Whiskey is also the only person besides Blanc who's nice to Helen, sharing a friendly conversation with her and expressing genuine sympathy for how Andi was treated at the trial.
When Helen begins breaking Miles' glass sculptures, Whiskey is the first to cheer her on.
While it may lead to some serious repercussions for them, Helen and Blanc avenge Andi by destroying Miles' reputation, along with the Disruptors finally doing the right thing to make sure Miles faces justice.
As dim as she is, and despite selling her out like the others in court, Birdie cared enough about Andi to remember that she had a sister.
When Miles talks about the Mona Lisa, Helen demonstrates reverence and respect for it, even saying "It's really something." Which makes her decision to destroy it that much more poignant. She wouldn't do that unless she really felt there was no other choice.
Once again proving that he puts the "gentleman" in "gentleman sleuth", Blanc is nothing but kind to the grieving Whiskey after Duke kicks the bucket, gently asking her to move aside so he can better examine the body.
