Dig Three is the story of a team of drill-bit explorers who crash-landed underground while searching for irriduem. You play as YLO, the team leader, digging deeper to find your scattered crew. Each member has their own personality, their own role in the expedition, and their own way of dealing with being stranded.
YLO - The Leader

YLO is the character you play. The leader of Digger Expeditions Ltd., YLO is the one who holds the crew together. Before the crash, YLO was the driving force behind the expedition - the one who believed irriduem was out there and convinced the team to go looking for it.
After waking up alone, YLO's first thoughts are about the crew. Not about survival, not about irriduem - about the others. "I wonder what happened to the others?" That selflessness defines YLO throughout the game. Before every dive, YLO thinks about MRI, about finding friends, about not giving up. YLO is stubborn in the best way.
YLO's hull, drill, and engine can be upgraded with parts collected from crewmates found underground. The further you go, the stronger YLO becomes.
TVI - The Homesick One

TVI was always the sentimental one on the team. While the others focused on the mission, TVI's mind drifted to home. That tendency to daydream is exactly what caused TVI's crash - a moment of homesickness at the wrong time, and BAM. Broken crankshaft.
Despite the setback, TVI stays practical and optimistic. TVI is the first crewmate YLO finds, stranded in the jungle with a plan already forming. TVI's practical nature comes through immediately: assess the damage, figure out what can be salvaged, make a plan. "Find the others, get a spare shaft, and come and get me then!"
TVI gives YLO hull pieces from the broken drill. It is a sacrifice, but TVI trusts the plan. TVI represents hope - the crew survived the landing, and they can still make it.
PII - The Quiet One

PII was never the loudest on the team, but PII was reliable. The kind of crew member who kept going when others stopped. That reliability became PII's downfall - pushing forward until energy ran out completely, crashing with no reserves left.
PII's situation underground is desperate. Rusting, low on energy, in need of irriduem to recharge. But PII faces it with a quiet dignity. No panic, no blame. Just an honest assessment of the situation and a willingness to sacrifice a working engine so YLO can reach the others.
PII's engine is more powerful than YLO's default one. That gift makes a real difference in reaching the deeper parts of the underground.
KRI - The Curious One

KRI was always fascinated by the underground. While the rest of the team saw irriduem as fuel, KRI saw wonder in everything they found - the crystal formations, the biomes, the way light behaves underground. That curiosity was an asset to the expedition.
Something changed after the crash. KRI found something underground that captivated them beyond reason. "Never been better!" KRI insists, but the crew member YLO finds is not the same KRI who left on the expedition. KRI speaks of visions and experiences that make no sense.
KRI has a sprint booster to offer, handed over with a mocking laugh. KRI no longer cares about irriduem or the mission. Whatever KRI found underground, it changed everything.
MRI - The Competent One

MRI was the most capable member of Digger Expeditions Ltd. While others got scattered by the crash, MRI kept going. Where others took wrong turns or gave up, MRI found the right path.
MRI is the one YLO thinks about most. "I hope Mri is OK." Before every dive, YLO's thoughts return to MRI. That connection drives the whole game. When YLO finally finds MRI, it is clear why MRI was the one who made it - calm, resourceful, and already building a base.
MRI proves the mission was not futile. There is irriduem underground, real irriduem, enough to power everything the team needs. But MRI also knows the job is not done while crew members are still stranded.
LRI
LRI is mentioned in crew conversations but is harder to find underground. LRI made a critical mistake during the expedition - trusting something that should not have been trusted. The consequences were severe.
Finding LRI is one of the more sobering moments in Dig Three. Where other crewmates offer hope or help, LRI's encounter is a reminder that the underground is genuinely dangerous and that not every decision can be undone.