Robert LlewellynRobert Llewellyn, probably best known as Kryten the android on Red Dwarf, is the scrapmaster of the show. Not just the host of the show, Robert knows his stuff. I mean, he actually knows the science behind the machines as opposed to some vapid host reading it off of a cue card.Robert is the soul of the show.
 

Cathy Rogers was added to the on-air talent for the 2nd series and the American versions. She was,Cathy Rogershowever, a producer for all of the series'. Lest you think Cathy was added to "dress up" the show (and we're not complaining about that), she also has a masters in health policy and studied medicine for 3 years at Oxford University. This is one co-host who has brains and isn't just window dressing. Cathy is now doing other projects for RDF.
 

George GrayFor the 1st US series, hosting duties went to comedian George Gray. George was a capable host and I grew to like him after a couple of shows. His style is loud, a contrast (off putting at first) to what we were used to. He also plays it dumb at times (and goes for the joke) but from watching him host, it's probably an act.
 

Sally GreySally Grey was the host for the pilot. Having never seen the pilot myself, I can't comment on her performance. I have been told that her hosting was adequate. However, it bears mentioning that the casual viewer shouldn't make judgements based on one performance. Either it wasn't "great" or she had other engagements that prevented her from going ahead as series host (thus she was replaced by Robert).

Tyler HarcottThe 2nd through 5th American series is brought to you with a new male co-host. Tyler Harcott hails from British Columbia, Canada. His style of hosting is a bit closer to Robert's. We know it's unfair to make the comparison but, we must. We call him a co-host since both he and Cathy (now Karyn) share the same duties. It's also important to realize that he is an individual with an equal share in the host role.
 

Karyn BryantJoining in the fun and filth for the 4th and 5th US series is Karyn Bryant. Driving a tank was just one of the many things she did for the TBS series 'Movies For Guys Who Like Movies' which seems appropriate for the new Mistress of Junk, the Princess of Scrap, the...well, you get the idea...to have done. There is no doubt that this gal is enjoying herself as she's a seamless fit into the show. We do miss Cathy's accent though.

Lisa RogersLisa Rogers is the next lady to inherit the throne of being "Robert's little friend." Her previous work includes The Big Breakfast and Sport Relief. Think of Lisa not as a replacement for Cathy, but as the new co-host. She's got no fear in mucking about with the teams and can hold her own when chatting with Robert. Oh, and a point we can't stress enough (because everyone wants to know)...she's not related to Cathy.

Rossi MorrealeJunkyard Mega Wars...REtooled, REengineered, REborn. Two all-new hosts for the latest incarnation of everyone's favorite junkfest. Rossi Morreale is a former college football player for Arkansas and a tempter from Temptation Island 2. He has the attitude of an extreme-sports athlete and seems to do little more than antagonize the teams.

Bobbi Sue LutherProviding some eye-candy, Bobbi Sue Luther is an enthusiastic lady who seems to stay on the sidelines. She starts the races and talks to judge Greg Bryant during the build day. Her previous work includes modelling and, most impressively, Bobbi Sue is a trained firefighter. Don't let the "dumb-blonde" act fool you...this gals has got brains!
 
 
 
 
 
 
 

Kamaya J 
Kamaya J and Rob Czar are your youthful hosts for Operation Junkyard. Operation Junkyard is a slightly modified kids version of Junkyard Wars. Previous to OP/JY, Kamaya studied dance in New York and has appeared in music videos and other TV work. Rob was host of a popular Miami-based kids show that won some Emmys! Be sure to catch all of the action Saturday mornings on NBC!  Rob Czar