Lóni was a Dwarf of Erebor.
Lóni was part of Balin's Colony to reclaim Moria. Their mission at first seemed successful, and Balin went so far as to claim the title Lord of Moria. This all changed in their fifth year their. On November 10th, the Orcs came up the Silverlode and killed Balin while he was alone, and unaware and looking into Mirrormere. The Dwarves fought back but eventually lost East-gate and First Hall. The Orcs made it across the Bridge of Khazad-dûm and there was a battle in the Second Hall, and Lóni and his companions Frár and Náli died bravely while the rest of the colonists retreated.