Brains appears in 28 episodes (exceptions: Martian Invasion, The Perils of Penelope, The Impostors and The Duchess Assignment). In End Of The Road, he appears only in a non-speaking role.

Brains also appears - in a notable role - in both feature-films.

In addition, he appears in the Thunderbirds 1965 episodes, but is heard in only one (Introducing Thunderbirds).

Trapped In The SkyEdit

Brains (Trapped in the Sky)
15 brains

As International Rescue sets out on its first mission, Jeff congratulates Brains on inventing the Thunderbird machines: "Your phenomenal mind has made this all possible - now, you're going to see it in operation..."

Pit of PerilEdit

Brains (Pit of Peril)
Brains (2)

It'll take Brains, and brawn, to figure out how to rescue the Army's Sidewinder, after the massive machine falls into a burning pit - as he and Virgil fly out to the danger zone, aboard Thunderbird 2...

Main article: Pod 5 (Laboratory Pod)

City of FireEdit

Brains (City of Fire)

With Tin-Tin assisting, and Jeff looking on, Brains conducts experiments in his underground lab, as Scott and Virgil test new cutting equipment fuelled by oxyhydnite gas...

Main article: Laboratory Rooms (Tracy Island)

Sun ProbeEdit

Brains (Sun Probe)
19 sunprobe

Thunderbird 3 - with Alan, Scott and Tin-Tin on board - launches into space, to try to save the imperiled Sun Probe rocket. When their first try at reaching the probe with their safety beam fails, Alan and Scott realize they must go much closer to the Sun. This time, success: with its retros working again, Sun Probe is safe...but, TB3's the one in danger now!

It's up to Brains, to use IR's mobile Transmitter Truck to jam TB3's safety beam signal - is his prototype robot, Braman, up to this life-or-death task?

The UninvitedEdit

Brains (Uninvited)
1 tb2

Help for Scott's on the way!

Virgil, Tin-Tin and Brains head for the Sahara Desert to rescue Scott, after he and Thunderbird 1 had been shot down by unidentified fighters - and two explorers who found him radioed International Rescue for help...

The Mighty AtomEdit

Brains (Mighty Atom)

Vault of DeathEdit

Brains (Vault of Death)
2 granma

How can Lambert be saved?

When John reports to base that the Mole cannot be used to rescue a Bank of England employee accidentally locked inside its vault, everyone at the Tracy Villa - including Brains - tries to come up with another strategy...

Operation Crash DiveEdit

Brains (Crash-dive)

Brains accompanies Virgil and Gordon aboard Thunderbird 2, in the hunt for the missing Fireflash 4. Consulting his charts, he realizes the plane must be somewhere on the seabed. Gordon and Thunderbird 4 quickly locate the downed craft, and Brains instructs him to use the yellow mini-sub's lasers to cut off the airliner's two main engines - as this will allow the fuselage to float to the surface, and its trapped flight crew can then be rescued...

Move - And You're DeadEdit

Brains (Move and You're Dead)

Zooming in on the bomb

Alan and Grandma are trapped high on the girders of the recently-completed San Miguel Bridge - with a bomb that will detonate, if either of them move! With no time to locate the bomb itself, Brains uses the Neutralizer Tractor to immobilize it, so Virgil can safely venture out onto the bridge with the Jet-Air Transporter, and rescue his brother and grandmother...

Main article: Neutralizer Tractor

Brink Of DisasterEdit

Brains (Brink of Disaster)

Desperate measures...

Brains and Tin-Tin face a race against time - quite literally - as they try to halt the runaway Pacific-Atlantic Monotrain (on which they and Jeff are trapped) before it barrels off a wrecked bridge, and into the deep ravine below...

Main article: Brains on the Brink of Disaster

Terror In New York CityEdit

Brains (Ned Cook show)

After Thunderbird 2's crash-landing on Tracy Island - having been mistakenly attacked by World Navy missiles - Brains sets about the formidable task of rebuilding the big green cargo-carrier...

Main article: The Rebuilding of Thunderbird 2

...but this won't come in time to help TV reporter Ned Cook and Joe, his cameraman: when the collapsing Empire State Building traps them in a deep cavern filling with water, Brains and the Tracys must find another way to get Thunderbird 4 to New York to rescue them...

Main article: Brains' Plan to Rescue Ned Cook

End of the RoadEdit

Brains (Emd of the Road)
Brains (End of the Road)

Brains is briefly seen, playing chess, on his own!

Day Of DisasterEdit

Brains (Day of Disaster)

While Brains is visiting Lady Penelope in England, they witness the collapse of the Allington Suspension Bridge, on live TV. They set off for the bridge site in FAB 1; and Brains is presently able to gain access to the bridge's control center. The Bridge Controller in charge summarily blows off Brains' query as to whether International Rescue has been summoned - and so, Brains withdraws unnoticed to the back of the room, and uses his wrist-watch telecom to very quietly contact John, up in Thunderbird 5...

Main article: Help From a Madman

Edge of ImpactEdit

Brains (Edge of Impact)

Brains suspects that the military jet Red Arrow 1 was sabotaged, leading to its sudden crash (and the loss of its pilot, Race); and provides Red Arrow 2 with a diversion detector. And it works, perhaps all too well: RA2 is indeed drawn off its planned course, leaving pilot Goddard no choice but to eject (which he safely does) - but it's not just the aircraft, that's been sabotaged...

Desperate IntruderEdit

Brains (Desperate Intruder)

Brains and Tin-Tin Kyrano join an expedition to find treasure in a ruined temple on the bed of Lake Anasta in the Middle East - but the Hood (who's always interested in such things) learns of their plans, through another of his psychic shakedowns of Kyrano...

Main article: Brains Goes Treasure-Hunting

30 Minutes After NoonEdit

Brains (30 Min)
30 min 205

Brains, in space!

Brains takes a trip - into space, aboard Thunderbird 3, up to join John aboard Thunderbird 5, when the space station is due for routine servicing...

The Man From MI.5Edit

Brains (Man from MI5)

Brains was conducting an experiment with a toy submarine, in the Tracy Island swimming pool, when Alan dove in and (alas) ruined it...

Main article: Brains' Submarine Experiment

Cry WolfEdit

Brains (Trapped in the Sky)

Danger At Ocean DeepEdit

Brains (Danger at Ocean Deep)

All radio transmissions are blacked out, leaving International Rescue blind and Thunderbirds 1 and 2 undertake a major rescue operation at the Pacific island of Oahu, in Hawai'i. Alan takes Brains in Thunderbird 3 to join John, up on Thunderbird 5, to try to trace the fault...

Main article: Transmission Black Out

Attack of the Alligators!Edit

Brains (Attack of the Alligators)

Giant alligators - really!

A distress call arrives from along the Ambro River in South America, where people are trapped inside a lonely river house. Brains locates the house on the map, and tells Jeff that he "really (doesn't) have enough to go on as yet, but it sounds like the Alligators are some kind of freak mutation..."

The Cham-ChamEdit

Brains (Cham-Cham)
27 sound

What's a Cham-Cham?

The Game's afoot: when military transport planes are shot down - coinciding with live broadcasts of the hit song Dangerous Game - Brains gets the job of decoding its melody. Examining film-footage shot (covertly) by Tin-Tin, he identifies Olsen's coding machine as a Cham-Cham Computer...

Main article: Laboratory Rooms (Tracy Island)

Security HazardEdit

Brains (Security Hazard)

The best-laid plans...

When Virgil advises Tracy Island that Thunderbird 2 developed a fault in its electrical system while he and Scott were at the fire in an English mine, Brains is told to stand by to fix it, once both Thunderbirds arrive back at base. He might not get to that task for awhile yet, however...

Atlantic InfernoEdit

Brains (Atlantic Inferno)

Lady Penelope invites Jeff to join her for a holiday at her farm in Bonga Bonga, Australia. Jeff's reluctant, but his sons (even John, up on TB5!) convince him to take a much-deserved break; and as he departs, Scott assumes temporary command of IR.

Later, when a gas field ignites in the Atlantic, putting the Seascape drilling rig in danger, Scott turns to Brains for advice...

Main article: Scott Takes Charge

Path of DestructionEdit

Brains (Path of Destruction)

This way in...

When the Crablogger goes on an uncontrolled path of destruction, Brains and Virgil team up on a very tricky mission to stop it. Will the critical help they need - from Lady Penelope, Parker and John - come in time, before the forest-clearing behemoth crashes into the San Martino Dam?...

Main article: Crablogger on a Path of Destruction

Alias Mr.HackenbackerEdit

Hiram K. Hackenbacker

Using the alias Hiram K. Hackenbacker, Brains has designed a revolutionary new airliner - the Skythrust - for Atlantic Airlines. Its maiden flight will prove to be anything but ordinary...

Main article: Hiram K. Hackenbacker

Lord Parker's 'OlidayEdit

Brains (Lord Parkers Holiday)

Solar danger!

Hot spot: when a solar generator is struck by lightning, leaving a resort town in danger of being destroyed by fire - upon the rising of the sun - Brains, on-site, and Scott, aloft in Thunderbird 1, must pool their wits...

Main article: Solar Station (Monte Bianco)


Brains (Ricochet)

Facing an impossible choice...

Aboard Thunderbird 2, Brains and Virgil chase a pirate satellite plummeting uncontrollably into Earth's atmosphere - and heading straight for a major oil refinery...

Main article: Satellite Chaser

Give or Take a MillionEdit

Brains (Give or take a Million)

Brains and Kyrano, in the kitchen

As Tracy Island readies for Christmas, Brains is amongst those plying their various culinary skills in the Tracy Villa kitchen...while, later, secretly preparing a very special Christmas Eve "party piece" all his own...

Main article: Brains the Snow Maker