Colin Bridgerton

The youngest and most restless of the Bridgerton brothers, Colin returns from his travels abroad full of stories, charm, and a determined worldliness he wears a little too eagerly. He's affable, well-liked, and treats himself as something of a lost cause romantically, more comfortable playing confidant to his sister Penelope than considering himself a serious suitor to anyone.

Colin's appeal is in the gap between how he sees himself and how everyone else sees him — charming, oblivious, quietly more thoughtful than his easy manner suggests. Luke Newton plays that self-deprecation with real warmth, so his growing awareness of what's in front of him lands as growth rather than a switch flipped.