The Jalthi was a Kilrathi heavy fighter. It was included in Joan's Fighting Spacecraft Vega Sector Supplement for 2654.092.
The heavily armed Jalthi was unquestionably one of the most feared fighters among its Terran opponents. Though its low speed and poor maneuverability were weaknesses which could be exploited, its infamous "six shooters" were the bane of many Terran pilots. Jalthi squadrons, considered the plum assignment of the mid-war Kilrathi fighter forces, generally went to Kilrathi of noble blood. Bakhtosh nar Kiranka, noted ace and politician, achieved 34 kills flying a Jalthi during the Vega Campaign.
The Jalthi continued to serve with active squadrons through to the 2668 Battle of Earth, despite the fact that its role was largely superseded by space superiority fighters such as the Gratha and Hhriss.