Sebastian has light brown hair, black eyes, and slightly pale skin. He wears a yellow hard-hat and a blue miner outfit with a white shirt underneath.
Sebastian is portrayed to be a quirky and appreciative person. He seems to be willing to risk everything to meet Jesse and seems to worship him/her.
- "Jesse, I need to talk to you!"
- —Sebastian to Jesse. src
- "A Journey's End?"
- Talking to Sebastian will give Jesse a piece of lapis lazuli. However, the piece of lapis lazuli isn't used at all in episode 8.
- Sebastian was the name of a young Minecraft: Story Mode player who suffered from cancer. The character in the game served as a tribute to the child, who passed away before the final episode was released.
- It is unknown how Sebastian and the other miners obtained lapis lazuli in The Nether, as it does not generate naturally in The Nether, where the quartz mine is located.
- In fact, it is generally impossible to craft lapis, (unless the block-mineral conversion, (1 block to 9 lapis) counts. But however, the lapis block would have to be crafted from the lapis itself.)
- There are miners in "Hero in Residence" that look like Sebastian, but are written as "Miner01," "Miner02," and so forth confirmed here: (Link)