Liam Trang

Liam Trang is a main protagonist in Saviours. He initially appeared as a guest character in the latter half of the second season and was promoted to a main cast member for the rest of the series. Liam was first introduced as an individual affected by The Artefact, being given the ability to move faster than the speed of light. Liam would eventually be known under the alias of "Velocity" when he becomes a hero of Pulse City.

The Beginning of Heroism
Liam was first introduced as an individual stopping petty crimes. He was caught on a hidden camera by the Saviours using his ability. Sarah Woodward, also known as "The Light", discovers his identity and befriends him. Sarah eventually opens up to Liam about her ability and he opens up to Sarah as she had hoped. She explains that his ability, if harnessed correctly, could lead to time-travel. Liam is unsure of this, but Sarah encourages this and suggests they could use it to learn about history. Liam is intrigued by this as he has little knowledge of his own past.

Sarah and Liam would then work together to achieve Sarah's goal. Liam succeeds in his test run to time-travel. Sarah, under false pretences, suggests Liam and her should travel to the night that led to them getting empowered. However, this night is in fact, the night of Dan Silver's death. Liam is agreeable to this and the two attempt to travel back. Alisha Burke and Jack Redford, "The Glow" and "The Fury", attempt to intervene in the attempt but ultimately are taken back also. Due to the two unexpected elements (Alisha and Jack) entering the energy field, Liam misses the time by a few hours.

He assists Sarah to her own apartment where she confronts herself. Liam appears quite confused until it all becomes clear. Alisha and Jack also arrive to explain everything. As Sarah goes to attack them, Liam ties them all up and asks them to explain calmly. Jack breaks free but stays seated. They explain it all to Sarah's past self and Liam to his surprise. Liam understands the importance of maintaining the timeline with Alisha. However, Sarah ultimately makes the decision to save Dan and Tamsin. Liam and the future team are erased from the timeline at this point as the new timeline takes place.