Board Thread:DC's Legends of Tomorrow discussions/@comment-9346948-20160407211017/@comment-24578309-20160410180338

Kaestal wrote: Also... isn't Eobard Thawne (in this show) from 2166 or sometime around there? The future that Vandal Savage took over isn't that far from his time....

Maybe Eobard was alive during that time. Eobard was born in 2151 which would make him 15 in 2166, however he exists in an alternate timeline where Eddie never comitted suicide, which diverged into this one at that moment. The Speed Force protects himself and links him to his timeline as a remnant.