Originally posted by pantysniffer
Yes it was explained Drax has his killing blow encoded into his very being. You read the comic right?You\'d think given Thanos genius he would have realised this given the purpose Kronos created Drax for but then having taken blows from Drax many times before its no wonder Thanos found it \"interesting\".
🙂
Of course of the times they've actually fought, Drax has never had a clean shot from behind while Thanos was busy the way he did when he killed him. So that may have had something to do with the ease in which it was done.