The senior researcher of a Delta Quadrant team that created Omega molecules in 2374, who begs Voyager's crew not to destroy the energy source his people desperately need.
Allos is a scientist from an unnamed Delta Quadrant civilisation. He appears in the fourth-season Voyager episode The Omega Directive.
His team succeeded in synthesising Omega, the unstable molecule that Starfleet captains are under standing orders to destroy at any cost. The molecules broke down, devastating the laboratory and damaging subspace across the surrounding region. Voyager's away team pulls the injured Allos from the ruins and treats him in sickbay.
Allos pleads with Seven of Nine, explaining that his world's resources are nearly exhausted and that Omega is its only hope. Janeway nevertheless removes the surviving molecules and has them destroyed, while his government's ships pursue Voyager in vain.