Brett Gelman

Brett Gelman plays Martin, the guest who turns Fleabag’s look-to-camera confession into a social emergency. Waller-Bridge’s BBC Three-to-Amazon comedy-drama (2016–2019) is a closed novel: twelve hours, a second season that risks a priest, and an ending that treats stopping as craft. Inside that machine, Martin is not a side joke. He is the temperature of the room — boundary-breaking cruelty that makes the dinner table feel like a dare.

Start on s01e01 if you need the contract: funny as a defense, already a tell. Gelman’s job is later, once the confession has a household attached. The fourth wall is a relationship here, not a gimmick, and Martin is the relative who walks into it without knocking. Awkward is the method. Awful is the weather.

First-run viewers often date the turn to s01e04, when the joke grows a shadow. Martin belongs to that shadow. He is the in-law as climate — the reason a rewatch still makes you put the fork down, then lean in. Season one puts the confession down on s01e06; the aside is no longer free, and Gelman is why the table still feels like a test.

The same prestige voltage later followed him into Stranger Things, stretching a résumé already built on discomfort. TV Flash files him as Fleabag’s most necessary bad guest: supporting heat that the twelve-hour novel cannot cut without losing the dare. Watch him when the room goes quiet. That is the performance.

Twelve hours is the whole novel, BBC to Amazon, 2016–2019, and stopping is the craft the confession was always aiming at. Gelman does not need a spinoff clause to matter here. Martin is the guest who makes a rewatch physical — fork down, then lean in — because the fourth wall was never a toy. Season two can risk a priest; the dinner table already risked a relative. TV Flash keeps him in the closed book: supporting climate, not a footnote you skip between asides.