Caine

Caine was a student at Freeston prior to the Apocalypse. Afterwards, their fate is unknown.

Pre-Apocalypse
Prior to the Apocalypse, Caine was a student at Outwood Academy Freeston and was known by Robin Dunne and Benjamin Hodson.

Post Apocalypse
Caine's status after the Apocalypse is unknown.

S1, E1 - The Days Afterwards
Caine was mentioned by Benjamin and Robin when they discussed people who's fates were unknown to them.

Season One

 * S1, E1 - The Days Afterwards (Mentioned only)

Behind the Scenes

 * Although it was never confirmed, it can be presumed that Caine was most likely in the same school year as Benjamin, Robin, Cole and Ember.
 * Caine also most likely died at some point after the apocalypse, as most of the UK's population had died within the first year.