Mark Preston is a fictional character portrayed by Tyrees Allen in the TV series Walker, Texas Ranger.
In the first episode they appeared in, titled Higher Power (season 5), they were 42 years old.
They appear in 3 episodes out of a total of 196 aired
Episodes3
Higher Power
episode S5.E1 september 1996A young boy is considered to be the reincarnation of a former master, Lama Dolgin. Walker helps protect Master Rin who has taken the boy under his wing in order to restore him to his power.Patriot
episode S5.E2 september 1996Trivette's cousin is killed when he learns soldiers are stealing supplies from the base. The killers are part of a white-supremacist group; the leader is arrested for murder. The group retaliates by taking over a TV station for hostages.Cyclone
episode S5.E10 november 1996Alex, C.D. and a group of fifth- and sixth-grade students from a Dallas-area elementary school are kidnapped by mercenaries, who demand $10 million in ransom. To ensure their demands are met, the crooks trap the victims in the bus and park it in a landfill, then cover it with mud. Walker and Trivette race against the clock to save the students and their friends and capture the criminals - also well aware that a deadly storm system with a history of spawning deadly tornadoes.
- Higher Power
- Patriot
- Cyclone