Denver

Denver is a Great Western tank engine who was saved from scrap by Doug. His escape made him popular with the other engines, which made him a little overconfident. He now works on the branch line with David. He has a brake van named Toad.

Biography
Denver was built by the Great Western Railway at Swindon Works and was "push-pull" fitted for branch line work. He was originally numbered in the 48xx series, but along with the rest of his class was renumbered into the 14xx series in 1946, eventually becoming 1401. He worked as a passenger engine on a branch line in the West Country.

In 1969, he was sent for scrap and was left on a siding to rust. He spent a while there before Doug, a C&R 812 class engine pulled away from the diesels under the cover of night and fog. They arrived back the next morning and thanked each other before Denver was shunted to the works. Once he was refitted to work on the railway, he was tasked with shunting trucks in the yard, on one occasion, he accidentally shunted them too hard and the trucks blamed it on David. He later owned up to the mistake but was still sent to work in the yards.

Season 6

 * Saved From Scrap
 * Stepney and Midlander (mentioned)
 * A Western Rescue
 * Alfred and Judy's Bogus Journey
 * A Deseasel (cameo)
 * Escape
 * Ballast and Sleepers!
 * A Miniature Christmas
 * What a Blast!
 * No. 10

Season 7

 * Shane Pulls the Express (mentioned)
 * The Deputation
 * River Mite's Secret (mentioned)
 * Quarry Quarrel
 * Dockyard Distress (mentioned)
 * Perkins' First Train
 * River Irt and the Cars (mentioned)
 * River Mite's Ballast Blast
 * River Esk's Mess (mentioned)
 * Northern Rock's Road Trip
 * A Special Guest
 * William Beck
 * Shelagh of Eskdale (mentioned)
 * Lady Wakefield
 * Twin Trouble (cameo)
 * Douglas Ferreira (mentioned)
 * Les

Season 8

 * Diesel Trouble
 * Stepney's Traumatizing Adventure
 * Down the Mineshaft
 * Turntable Mashup
 * Ivatt's New Coat
 * Deep Trouble
 * Halloween
 * Spic, Span and in Charge (cameo)
 * The K2 and the A4
 * Squeak, Rattle and Scrap
 * Peace and Quiet
 * Payback

Spin-Off(s)

 * The Construction Company (cameo)
 * The Narrow Gauge Engines
 * The Miniature Engines
 * The Mountain Engines
 * The Diesels
 * Origins
 * The National Railway Museum

Season 9

 * Dirty Work


 * Tender Engines (cameo)
 * Rock 'n' Roll
 * Grudge Match
 * Flood
 * Overworked
 * Spills and Chills
 * Your Majesty
 * Q1, Telford 0
 * Don't Get Cocky (mentioned)
 * The Haunted Mine
 * Ghosts
 * Pride
 * A Queen's Beauty

Season 10

 * The Royal Train
 * No Help at All
 * Russell


 * Livingston Thompson
 * Recolor
 * Jet Plane
 * Flower Power
 * Stepney's Visit
 * Claude's Long Haul
 * 2000: Dawn of Y2K

Season 11

 * Our Bluebells
 * 50 Years Since Preservation
 * Aerolite (mentioned)
 * The Ghost of Tywyn Wharf
 * Don't Jump to Conclusions Berkeley
 * Stewart the Mail Engine
 * Coal
 * Luck
 * An 'Accident'
 * USA Twins
 * Enid and Wyddfa
 * Snowdon
 * Moel Siabod and Padarn
 * Ralph and Eryri
 * Ninian and Yeti
 * Peris and George
 * Euston Nights: The Ballad of Telford
 * Runaway
 * Ruston
 * Dubs: Weird But Efficient
 * Stirling Double
 * Ivatt No. 2

Season 12

 * Billboard
 * Once in a Lifetime (mentioned)
 * It's Always Sunny In Philadelphia
 * Holdin' Out for a Hero
 * Failed Brakes
 * Edward Thomas and the Statue (mentioned)
 * Snow
 * Michael The Hopper
 * New Tram
 * Tobias and the Sign (mentioned)
 * The Man of Tywyn Station
 * Rod's Christmas Wish (does not speak)
 * Patrick's Pride
 * Steady Now!
 * Britannia
 * Steve's Tree

Season 13

 * Challenge Accepted!
 * Fifty Years of Preservation
 * The Statue
 * Indiana Jackson
 * Hot Pink
 * The Early Bird Gets To Wake Everyone Up
 * Wet Tracks
 * Snow Tracks

Season 14

 * William's Jokes
 * Mikado and Den
 * Trip to York
 * Meeting the Duchess
 * The World's Fastest Engine
 * Stephenson
 * Quadruple Header
 * The Great Haul
 * The Great Hall
 * Puffing Billy Rides Again ( ͡° ͜ʖ ͡°)
 * The Original Locomotive
 * A Talk With Sans
 * A Great Novelty
 * Pluto (9 Planet)
 * Derwent
 * Lying Lyons
 * No. 3
 * Cornwall
 * Shannon
 * LNWR Pride
 * Not-So Single Stirling Singles
 * A Blast From the Past
 * An Old Friend
 * The Pride of the GNR
 * The Same Manufacturer
 * LSWR Pride
 * Great Western Nostalgia
 * The Pride of the LNER
 * A Swindon Star
 * Scotsman's Wish
 * The Sword and the Stone
 * Lord Nelson
 * King George V
 * A Surprise
 * Quinn
 * David's Cousin
 * Electrics
 * Day of the Diesels
 * Coaches
 * Troublesome Trucks
 * The Journey Back
 * Cinders and Ashes
 * Avalanche
 * Den and the Blizzard
 * The Big Freeze

Season 15

 * Dawn of the Diesels
 * The Rocket
 * High Winds
 * Rolling Stocks (not-seen)
 * The Special and Stubborn MK1's and MK2's (mentioned)
 * Busted Buffers
 * Rules Are Rules
 * New Controller
 * Fire
 * Vic and the Trucks
 * You Got a Friend in Me
 * Being Jackson (mentioned)
 * The Tables Have Turned (cameo)
 * Eager But Impatient
 * A True Friend
 * Alan's Find
 * Rookie Mistake
 * We Make a Team Together
 * 60 Years Since Preservation
 * The Construction Site Entity (mentioned)
 * Cole's Biggest Fear
 * Bad Weather (mentioned)
 * Timber!
 * Matt's Busy Day (mentioned)
 * The Not-So Great Race
 * Demolition Vehicle
 * If You Demolish A Building Today, You're In For A Big Surprise
 * No Fuel!
 * No Man's Rubble (mentioned)
 * All Work, No Play Makes Jack A Dull Boy
 * Safety First
 * The Rise of Diesel Powered Vehicles
 * The Grass is Always Greener at a Place We're Not Doing Construction At
 * Constructing a Christmas Celebration

Season 16

 * Express Coming In Late
 * The Ghost of Southampton (mentioned)
 * Christmas Fools (mentioned)
 * PhotoBomb!
 * Straight Shit!
 * Ruston's Surprise
 * April Fools!
 * Shane's Special Train
 * Well Of Course I Know Him, He's Me
 * Incline Decline (mentioned)
 * Musketeer
 * There's No Emergency
 * A Trip To London
 * Crimson's Chin (cameo)
 * Peter's Engine Failure
 * David's Christmas Miracle
 * Harold and Barry's Wish (cameo)
 * A Narrow Guage New Years

Season 17

 * The Three Musketeers
 * Heat Wave
 * Banker (cameo)
 * Streamlining
 * Quarry Quarrel
 * Mikado's Secret
 * Peter Pan and Wendell (mentioned)
 * Elephant on the Line
 * David and Telford's Weird Adventure
 * The Ghost of the Hill
 * Terry and the Sleigh
 * Peter and Shane's Miraculous Race (mentioned)
 * Dubs' Special Feature (mentioned)
 * One Up
 * Stubborn as a Rock

Season 18

 * Hit Me With Your Best Shot
 * The Missing Engine (mentioned)
 * The New Mountain Engine
 * The Spirit of the Railway
 * Douglas and the Missing Coal Car (mentioned)
 * Valentines Day
 * 150th Anniversary

Season 19

 * The Missing Brakevan
 * Phil
 * A Great Rescue (cameo)
 * Old Rivals
 * The Argument
 * Finders Keepers
 * Lost and Found
 * All At Sea (mentioned)
 * Slow and Steady Wins the Race
 * Competing Engines (cameo)
 * Spooky Snow
 * Christmas Time
 * Telling Tales
 * Fast & Reliable
 * Signals & Alarms (mentioned)
 * Special Delivery (cameo)
 * Special Friends

Season 20

 * Peter's Long Day (cameo)
 * Kidnapped
 * Heat Wave
 * Saving Time
 * Over the Hill
 * The "Rail"ship
 * Paying Attention (mentioned)
 * Shot in the Dark (cameo)
 * What a Thrill(er)
 * Patience and Rules
 * Courage
 * Kicking the Bucket
 * Snowy Mountains

Season 21

 * Replacement
 * Phil: Before England
 * Who's the Fastest?
 * Bunked In
 * God, What a Bitch
 * Singing Springing
 * The Hottest Day in Town

Season 22

 * Ice Breaker
 * Twin Trouble (mentioned)
 * Not Right (cameo)
 * Cousin Quarrel
 * Glenn and William (mentioned)
 * The Kerr Stuart Duo (cameo)
 * 61264 and 61306
 * Bailey the Thompson B1
 * Wilbert the Forest Engine
 * Warrior's Misfortune
 * Peter's Punishment (mentioned)
 * What do You Know?
 * Breakdown (mentioned)
 * Den't Be Cocky
 * A Lesson to be Learned
 * By the Water (cameo)
 * Scrapped
 * No. 47524
 * No. 08734
 * Visitors
 * A Friendly Farewell
 * All Around the World

Season 23

 * Drumming
 * A Good Joke
 * Telford Makes a Mistake
 * Panicky Jackson
 * Laid Back Shane
 * Den Goes Away (mentioned)
 * I Wish You Were Here
 * Out of Site
 * A Real Tunnel Bore
 * Alfred and Judy's Solo Jobs
 * Too Damn Loud!
 * Avalanche!
 * Engines to the Rescue