Doctor Who: 10 Worst Things The Tenth Doctor Has Ever Done

Whilst this is technically the Meta-Crisis Doctor, he still wears Tennant's face so is making the list.

Journey's End is the big epic finale of Tennant's final series before only a few specials bring in his regeneration, and we see the return of Davros: creator of the Daleks. Having been shot by a Dalek earlier in the story, the Tenth Doctor under goes a partial regeneration, planting the remaining energy into the earlier mentioned hand he lost on his debut.

This results in the creation of the Meta-Crisis Doctor, who due to the intervention of Donna is part human, part Time Lord. After the two of them enact a rescue plan for the Tenth Doctor and all his friends, they manage to halt Davros' plans but not before the Meta-Crisis Doctor makes one more final move. Dalek Genocide.

Realising the Dalek fleet, even without their super weapon, could "slaughter the cosmos", the Meta-Crisis realises he is just as much the Doctor as the original and decides he has to stop them. The result as mentioned is the wiping out of every single Dalek present. Whilst the Daleks are undoubtedly the baddies, this is a big step for the 'Doctor'.

This was so uncharacteristic of the Doctor, and the actual Doctor is clearly infuriated, but wiping out the entire Dalek fleet (bar one ship) is big! But that's not it from Journey's End...