Board Thread:Shadow Fight 2 Discussion/@comment-34949931-20180309222352/@comment-25669516-20180310002434

Simply put, we do not know at this point of time. The writer expressed interest in doing a DLC style story regarding Titan's origins (see the first question) but for now it is a distant possibility, if at all.

Since we will get to know about Shadow and what happened to him in upcoming updates of SF3, it is possible that we will find out more about Titan as well. However, as things stand currently, he's definitely dead as a doornail.