E-Kobalt
From Tardis Wiki, the free Doctor Who reference
E-Kobalt was a Kroton commander sent to 2069 to acquire the Relic for the Krotons to use as a weapon against the Metatraxi.
After its offer for the Relic was rejected, the Shift present was able to manipulate its thoughts to become aggressive. E-Kobalt led the other Krotons on an attack against the people to obtain the Relic. It was defeated when the Eighth Doctor, with the help of Marie materialised the Faction Paradox ship around them. The Kroton having been turned overly aggressive by the Shift ordered an attack that bounced off the walls and wiped him and his fleet out. (PROSE: Alien Bodies)