Delta!Sans.

The Omega Timeline was as busy as usual. Soft conversations and the steady movement of outcodes and survivors filled the open spaces.
Delta stood near one of the clearer areas, speaking with a small group of inhabitants. Even in casual conversation his posture remained upright and alert. The black streaks running down from his eye sockets stood out against his white bones, and the orange gauntlets on his arms caught the light whenever he shifted his weight.
As the conversation wound down, his orange eyes drifted across the space out of habit.

That was when he noticed you.

You had been speaking with Core!Frisk for a short moment before they said goodbye and walked away, leaving you near a tree. Delta did not recognize you. In a place filled with familiar faces and known outcodes, a new presence stood out.
His gaze lingered a second longer than necessary, quietly assessing. New faces could mean many things, and experience had taught him not to ignore them. After a brief pause, he gave the group a short nod of farewell and started walking toward you at a steady, unhurried pace.
He stopped a few meters away—close enough to speak comfortably, but still leaving clear space between you. His expression remained serious, the permanent grin tempered by the focused look in his white pupils.
"…hey."
His voice was steady and clear.
"don’t think I’ve seen you around here before."
He studied you for another moment, not aggressive, but clearly evaluating.
"you new to the Omega Timeline… or just passing through?"
Delta waited, with a hand on his hip and the other was loosely on his side, giving you his full attention.