<P> Unknown to Superman , Doomsday had faced and beaten Darkseid in single combat , even after withstanding the full effect of Darkseid 's Omega Beams , and was laying waste to Apokolips . Unfortunately , before Superman could deal with Doomsday , Desaad opened a boom tube to Calaton -- the first world where Doomsday was successfully defeated -- and sent Doomsday through , to what he believed was his defeat at the hands of the Radiant . Doomsday was able to adapt , however , and overcome any opponent because of the process by which he was created , so , although the Radiant had defeated him once , he would not be able to defeat him again . Likewise , even though Superman had killed Doomsday once before , he was unable to do so again . Superman , while knowing this -- having been filled in on Doomsday 's history by the time - manipulating Waverider -- was obsessed with stopping Doomsday and followed him to Calaton . He fought Doomsday again with the help of the Mother Box , but , despite it providing him with extra weapons such as an ultrasonic gun and an energy sword , Superman met with defeat . Doomsday had evolved biological weaponry that maimed and almost killed Superman . He was forced to use one of Waverider 's time travel devices to leave Doomsday stranded at the End of Time , where Doomsday met the one force he could not overcome : entropy . Upon returning Superman to the present , the Mother Box healed Superman 's injuries and then `` died . '' On Apokolips , Darkseid became fascinated with Doomsday 's abilities after learning Doomsday 's origins from Waverider . </P>
<P> Unknown to Superman , Doomsday had faced and beaten Darkseid in single combat , even after withstanding the full effect of Darkseid 's Omega Beams , and was laying waste to Apokolips . Unfortunately , before Superman could deal with Doomsday , Desaad opened a boom tube to Calaton -- the first world where Doomsday was successfully defeated -- and sent Doomsday through , to what he believed was his defeat at the hands of the Radiant . Doomsday was able to adapt , however , and overcome any opponent because of the process by which he was created , so , although the Radiant had defeated him once , he would not be able to defeat him again . Likewise , even though Superman had killed Doomsday once before , he was unable to do so again . Superman , while knowing this -- having been filled in on Doomsday 's history by the time - manipulating Waverider -- was obsessed with stopping Doomsday and followed him to Calaton . He fought Doomsday again with the help of the Mother Box , but , despite it providing him with extra weapons such as an ultrasonic gun and an energy sword , Superman met with defeat . Doomsday had evolved biological weaponry that maimed and almost killed Superman . He was forced to use one of Waverider 's time travel devices to leave Doomsday stranded at the End of Time , where Doomsday met the one force he could not overcome : entropy . Upon returning Superman to the present , the Mother Box healed Superman 's injuries and then `` died . '' On Apokolips , Darkseid became fascinated with Doomsday 's abilities after learning Doomsday 's origins from Waverider . </P>
who sent doomsday to the end of time
who sent doomsday to the end of time
Superman
Superman