Trionic initiators were components used in the warp coil of the 24th century Starfleet vessel Hera. Trionic initiators had a reputation for producing unpredictable side effects, including warp bubbles and subspace deformations.

In 2369, when the Hera went missing, Geordi La Forge, son of Hera captain Silva La Forge, hypothesized that experimentation on the the Hera's warp drive may have produced a subspace funnel, causing the Hera to be transported 300 light years from its last reported position, to planet Marijne VII. (TNG: "Interface")