Four of Eleven at a glance
Four of Eleven is an epic Engineering officer in Star Trek Fleet Command built around one job: moving more resources, faster. Put him in the captain’s chair and your ship mines ore quicker. Seat him on the bridge and your cargo hold grows. For players who spend real time parked on ore nodes, that pairing saves trips and hours.
He belongs to the Unimatrix Twelve group, the Borg crew of assimilated faces pulled from across the Star Trek timeline. Behind the designation is Stonn, the Vulcan once promised to T’Pring, now folded into the Collective.
This guide walks through what his abilities do, the per-rank numbers from current game data, his character traits and shard costs, and the officers he works best alongside.
Star Trek background
In canon Star Trek, Stonn is a Vulcan from the original series. He was the man T’Pring chose over Spock, which set up the marriage challenge on Vulcan. The game reimagines him as a victim of the Borg. Its in-game lore frames Stonn as a geologist and surveyor whose devotion to his family lost all meaning once he was selected for assimilation.
The Unimatrix Twelve set runs with that idea across its whole roster: known people from the Trek universe, stripped of identity and handed a number. For Stonn the loss carries extra weight, since his earlier story was about choosing a settled life on Vulcan over conflict. Four of Eleven keeps a thread of that old life in his kit. A surveyor and geologist becomes, in game terms, an officer who is good at pulling ore out of the ground and carrying more of it home.
Four of Eleven’s role in STFC
Four of Eleven is an economy officer, not a combat one. Nothing in his kit helps you win a fight. Everything in it helps you gather and haul. His captain ability speeds up ore mining and his officer ability raises cargo capacity, so his natural home is a mining ship working ore nodes.
Ore is one of the base materials behind ship building, refining, and base upgrades, so a faster ore supply feeds almost everything else you are working toward. If you are building out a mining operation, or grinding ore for refinery and building costs, he is the kind of officer who quietly pays for himself over weeks of play.
Captain ability and officer ability
Captain ability: Efficient Ore Acquisition
As captain, Four of Eleven increases your ship’s ore mining speed by 60% as of the latest data. This is a flat mining-speed boost, so it applies whenever he sits in the captain’s chair on a ship parked at an ore node. It stacks with the mining bonuses already built into a dedicated mining ship and any mining research you have leveled, so the more your account leans into mining, the more this seat returns. The bonus does not climb as you promote him, so the captain value you get at rank 1 is the captain value you keep. The reason to rank him up sits in his officer ability and his traits, not in this number.
Officer ability: Cargo Optimization Algorithms
On the bridge, Four of Eleven increases cargo size. This ability does scale with promotion. The bonus runs from 40% at rank 1 up to 60% at rank 5, climbing five percent per rank, as of the latest data:
| Rank | Cargo bonus |
|---|---|
| 1 | 40% |
| 2 | 45% |
| 3 | 50% |
| 4 | 55% |
| 5 | 60% |
More cargo means fewer runs back to station and longer mining sessions before your hold fills. His two seats push in the same direction: mine faster, carry more.
Where Four of Eleven shines
Three spots where he earns a seat:
- Ore mining runs. With his captain ability speeding extraction and his officer ability widening the hold, he suits long ore-gathering sessions.
- Cargo-heavy hauling. Even off an ore node, his cargo boost helps any ship that needs to move more in a single trip.
- Borg and Unimatrix crews. He shares a synergy group with the other Of Eleven officers, so he slots cleanly into a themed mining crew.
None of these uses involve combat. He is a tool for the slower, steadier side of the game, where progress comes from a full cargo hold rather than a destroyed target.
Character traits and upgrade path
Four of Eleven carries three character traits, unlocked in order. You finish one before the next opens.
Assimilated comes first, across 3 levels, with officer XP costs of 1,500 / 2,700 / 3,800. Analytical follows, across 4 levels, at 7,650 / 6,000 / 7,000 / 8,850. Specialist is the long one, 9 levels deep, at 10,000 / 4,000 / 7,000 / 10,000 / 15,000 / 23,000 / 42,000 / 68,000 / 107,000. The back half of Specialist is where the real XP sink lives, with the last two levels alone costing 68,000 and 107,000 officer XP.
Promoting him through his five ranks costs shards on top of other resources:
| Rank | Shards to promote |
|---|---|
| 1 | 115 |
| 2 | 115 |
| 3 | 230 |
| 4 | 345 |
| 5 | 920 |
| Total | 1,725 |
Ranking up also draws on Independent Credits, Engineering Badges, and Active Nanoprobes at the higher tiers, so plan for those if you are pushing him toward commander.
How to get Four of Eleven
Four of Eleven comes from the Borg side of the game’s content. The exact source moves with event and store rotations, so check the current store and event availability rather than trusting an old unlock path. His shards stack toward the 1,725 total you need to take him from recruitment to max rank, so collecting him reads as a long-term project rather than a one-event pickup. Because his shards come in slowly, many players bank him as a background goal and crew him at whatever rank they have reached while they keep collecting.
Synergies
Two things matter when you crew Four of Eleven: his class synergy and his named synergy officers.
His class synergy bonus splits Command 45%, Engineering 30%, Science 45%. That shape rewards putting Command and Science officers in the other seats when you want the synergy to fire.
His named synergy officers are the rest of the Unimatrix Twelve set:
- One of Eleven, 45%
- Two of Eleven, 45%
- Three of Eleven, 45%
- Five of Eleven, 30%
- Six of Eleven, 45%
- Seven of Eleven, 45%
- Eight of Eleven, 30%
- Nine of Eleven, 45%
- Ten of Eleven, 30%
- Eleven of Eleven, 45%
A themed Borg mining crew naturally pulls from this group, which keeps the synergy active while you stack mining and cargo bonuses.
Frequently asked questions
Is Four of Eleven any good?
He is a strong pick for one specific job, mining and hauling. Outside economy play he does nothing, so his value depends entirely on how much you mine.
Where do you get Four of Eleven shards?
From the game’s Borg-related content. The source rotates, so check the current store and event availability rather than an old guide.
What is Four of Eleven best at?
Ore mining as captain plus extra cargo capacity as an officer. He is a pure economy officer.
Is Four of Eleven worth ranking up?
His captain ability does not grow with rank, but his cargo bonus climbs to 60% at rank 5 and his traits add up, so ranking him pays off most when he is a core part of your mining crew.
Four of Eleven is an officer you rank up because you mine, not because you fight. If ore and cargo are bottlenecks in your game, his captain and officer seats both work to clear them. If you rarely park on a node, your XP and shards are better spent elsewhere.
