Lighter Than Some

Lighter Than Some was a Huragok onboard the missionary ship Minor Transgression in the Epsilon Indi System, near Harvest, during the 23rd Age of Doubt. Unlike other Huragok, who normally keep to themselves, Lighter Than Some approached Dadab and made a "Hello!" gesture to him repeatedly until he understood, creating the beginning of their friendship. His pacifistic nature eventually led to his death when he was discovered helping the UNSC forces evacuate Harvest.

Trivia
Judging from the way Huragok name their "children," the name "Lighter Than Some" would literally mean that the mixture of gases Lighter Than Some's parents used when constructing it caused a slightly higher than normal buoyancy."