Prefer a reincarnated MC, where for example MC would be like 'i have already live one life already, being reincarnated is an extra so im not afraid of death as there is nothing to lose'.
The Mc be like "There's no reward if you don't take risks" and proceeds to send himself to death multiple times.
http://royalroadl.com/fiction/9337 This story is called Mythical Conquest. The MC starts off lazy and asked to be reborn as panda so that he could laze around, but he was rejected and was reborn in a world where all the mythologies in the world are true and are fighting against each other to prove who is the supreme being. He personality changes a bit as the story progresses but he isn't afraid to die and even welcomes it. He just wants to die fighting Against the Gods if possible. Oh, his goal is to Kill all the gods by the way. The story is also more complex than it seems.
I think those kinds of MCs are the most dull the ones that do fear death are the best like the mc of 'A Will Eternal' by ergen... Also for your request; Martial World True Martial World Emperor's Domination King of Gods Ze Tian Ji - in this the mc truly doesn't fear death but keeps telling everyone that he fears it!!!!
Dragon-Marked War God Experimental Log of the Crazy Lich Otherworldly Evil Monarch God Of Slaughter Chaotic Sword God