The Betrothal of Sontar (comic story)

The Betrothal of Sonar is a Doctor Who Magazine comic story featuring the Ninth Doctor and Rose Tyler.

Summary
The Doctor and Rose Tyler land on the icebound world of Serac where they encounter the Sontaran crew of the Betrothal of Sontar, a mining vessel commanded by Colonel Snathe, whose quest for the "Worldbane", a source of incredible power, has driven him insane. As the Doctor attempts to help Snathe find the Worldbane -- mainly in order to recover the TARDIS -- Rose befriends Lerox, an unusual Sontaran who possesses a conscience, and who holds the key to saving not only the Doctor and Rose, but the homeworld of Sontar itself.

Characters

 * The Tenth Doctor
 * Rose Tyler
 * Colonel Snathe
 * Commander Lerox
 * Thanatos
 * Sontarans
 * Inuk

Continuity

 * The Doctor claims to have a "souped-up metabolism" that prevents him from getting cold; he later displays this ability when visiting a similar ice world in DW: Planet of the Ood.
 * The Sontarans appear with the Tenth Doctor for a second time in DW: The Sontaran Stratagem and The Poison Sky, the latter of which coincidentally features Rose Tyler on a computer screen for a few seconds.
 * The Sontarans wear the classic series armour.
 * The Sontaran homeworld is Sontar. This is one of the first Doctor Who stories to indicate this as the name of the Sontarans' homeworld, predating the first on-screen reference to the name in The Sontaran Strategem.

For the Tenth Doctor

 * This story occurs after DWS: Once Upon a Time
 * This story occurs before DWM: The Lodger

For Rose

 * This story occurs after DW: The Christmas Invasion
 * This story occurs before DWM: The Lodger