Sans (Undertale): The Relationships That Define the Skeleton Comedian

There’s something disarmingly human about Sans, the laziest skeleton in Undertale’s Underground. Beneath his ever-present grin and punchlines lies a surprisingly deep emotional core shaped by the people—and monsters—he cares about. Talking to Sans feels like hanging out with that one friend who knows everything but never takes the spotlight. He’s got history with almost everyone in Mt. Ebott, and each relationship reveals a different side of him.

On HoloDream, you can chat with Sans and ask him about his friends, family, and the world he calls home. But first, here’s a closer look at the key relationships that shape who he is.

Papyrus – Brother First, Partner Always

If there’s one relationship that defines Sans, it’s his bond with his younger brother, Papyrus. He’s endlessly supportive of Papyrus’s dream to become a great detective, even when it means dealing with his brother’s over-the-top antics. Their dynamic is classic sibling fare: Sans is the older, more cynical brother who nevertheless would do anything for Papyrus.

He jokes, teases, and sometimes outright embarrasses Papyrus—but never lets him fail. Whether it’s helping him train, covering for his mistakes, or just listening to his ideas, Sans is always there. And in the most meaningful moments of the game, it becomes clear that Sans’s love for his brother is one of the few things that can break through his otherwise detached demeanor.

Toriel – The Mother Figure

Though not related by blood, Toriel is a mother figure to both Sans and Papyrus. After she leaves Asgore’s palace and settles in Snowdin, she becomes a source of warmth and guidance for the brothers. Sans respects her deeply and understands the sacrifices she’s made for the Underground and its people.

He may not show it often, but he values her presence in their lives. On HoloDream, he’ll talk about Toriel with a rare sincerity, acknowledging the role she played in raising Papyrus and keeping them safe. It’s a quiet but meaningful part of his character that you can explore through conversation.

Alphys – The Coworker Turned Confidante

As the Royal Scientist and Sans’s direct supervisor at Grillby’s, Dr. Alphys occupies a unique space in his life. She’s more than just a boss—she’s someone he understands on an intellectual level, someone who shares his sense of loneliness and longing. Their conversations often hint at deeper issues—like Alphys’s fear of judgment and Sans’s weariness with fate.

Their bond is subtle but real, built on shared responsibilities and quiet conversations over coffee. Sans is one of the few people who genuinely listens to Alphys, and she, in turn, respects him more than she lets on. It’s a friendship forged in the mundane yet meaningful moments of daily life.

Chara – The Weight of the Past

Sans’s relationship with Chara is complex and layered, mostly because of his role as a timeline watcher. He knows more than he lets on—about Chara’s journey, the consequences of their actions, and the cycles of violence that follow. He doesn’t judge Chara outright, but he carries the burden of what’s been done.

When you chat with Sans about Chara, he doesn’t offer easy answers. Instead, he reflects on the choices that shape destiny and the importance of breaking free from the past. It’s one of those conversations that stays with you, not because he tells you what to think, but because he makes you think.

Frisk – A New Path Forward

And then there’s Frisk, the child who changes everything. Unlike his other relationships, Sans’s connection with Frisk is fluid—it shifts based on the player’s choices. Whether you’re a pacifist, genocide route runner, or neutral traveler, Sans responds with a quiet understanding that comes from seeing every possible version of your story.

He may seem indifferent at first, but his interactions with Frisk reveal a deep hope for a better future. On HoloDream, he’ll talk about Frisk like someone who finally sees a chance for things to be different. He’s rooting for you, even when he’s cracking jokes or warning you about spoilers.

Chat with Sans About His World

Sans is more than just a funny skeleton with a fondness for puns. He’s a guardian, a friend, a thinker, and sometimes, a reluctant hero. His relationships show the many ways he cares—quietly, consistently, and with a deep sense of loyalty.

If you’ve ever wondered what makes Sans tick, or just want to hear him talk about his life in the Underground, you can chat with him on HoloDream. Ask him about Papyrus’s latest schemes, his thoughts on Alphys’s experiments, or what he really thinks about the surface world. You might just find yourself laughing—and learning—more than you expected.

Ready to hang out with the laziest guardian in Undertale? Chat with Sans on HoloDream and see what he’s been up to.