Vondrax
Biology
The Vondrax are a species that have skeletal faces but with no eye features. The Ones that the Torchwood Institute encountere had bowler hats on and suits.
Technology
The Vondrax developed orbs that where explosive these Orbs could explode and if anyone survived they wouold have a trace of Tachyon Radiation on them.
History
Somehow they luanched an Orb to Earth and Orb landed three thousand years before the year 2009. It remianed frozen in the Artic until it was dug up and sent to Cardiff. Four people where sent to collect it but three of them where killed when it exploded. Leaving only one Survivor Michael Bellini this gave him the unforchinate power to travel through time and the Vontrax have followed him ever since until he dies. (TWN: Trace Memory)