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 all the 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

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

2 granma

Operation Crash DiveEdit

Brains (Crash-dive)

Brains accompanies Virgil and Gordon Tracy aboard Thunderbird 2, in the hunt for the missing Fireflash 4. Consulting his charts, he realized 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 minisub'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 Tracy 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)

Brains takes a monotrain journey, that nearly ends in disaster.

Main article: Brains on the Brink of Disaster

Terror In New York CityEdit

Brains (Ned Cook show)

When Thunderbird 2 crash lands back on Tracy Island, Brains sets about rebuilding it.

Main article: The Rebuilding of Thunderbird 2

When the Empire State Building comes crashing down, both Ned Cook and his cameraman, Joe,fall into a deep cavern. Brains has to come-up with a plan to rescue them.

Main article: Brains' Plan to Rescue Ned Cook

End of the RoadEdit

Brains (Emd of the Road)

Day Of DisasterEdit

Brains (Day of Disaster)

While Brains is visiting Lady Penelope in England, they witness the collapse of the Allington Suspension Bridge, taking place on television. 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 Red Arrow 1 was sabotaged and provides Red Arrow 2 with a diversion detector.

Desperate IntruderEdit

Brains and Tin-Tin Kyrano mount an expedition to find treasure in a temple on the bed of Lake Anasta in the Middle East, but the Hood learns of their plans through his psychic link with Kyrano.

Main article: Brains Goes Treasure Hunting

30 Minutes After NoonEdit

Brains goes aboard Thunderbird 5, to service the space station.

The Man From MI.5Edit

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


Danger At Ocean DeepEdit

All radio transmissions are blacked out, leaving International Rescue blind and deaf. Alan takes Brains in Thunderbird 3 to join John on Thunderbird 5 to find the fault.

Back on Tracy Island, Brains traces the cause of the interference, the reaction between high-density fuel Liquid Alsterene and low-density OD-60 in close proximity. When these two chemicals are brought even closer together, an almighty explosion is the result.

Attack Of The Alligators!Edit

International Rescue receives a distress call from the Ambro River, where people are trapped in side a lonely river house. Brains checks the map to find location of the house, and tells Jeff that "he really don't have enough to go on as yet, but it sounds like the Alligators are some kind of freak mutation"

The Cham-ChamEdit

Brains gets the job of decoding the hit tune Dangerous Game, when transport planes get shot down. He examines the footage of Olsen's computer and identifies the machine as a Cham-Cham Computer.

Security HazardEdit

Atlantic InfernoEdit

Path of DestructionEdit

When the Crablogger goes on a path of destruction, Brains and Virgil team up on a mission to stop it, before it crashes into the San Martino Dam

Main article: Crablogger on a Path of Destruction

Alias Mr.HackenbackerEdit

Using the alias Hiram K. Hackenbacker, Brains has designed a revolutionary new airliner, the Skythrust, for Atlantic Airlines.

Main article: Hiram K. Hackenbacker

Lord Parker's 'OlidayEdit

Brains is sent on a mission, when a solar generator is struck by lighting, leaving a town in danger of being destroyed by fire.

Main article: Solar Station (Monte Bianco)


Tin-Tin askes Brains to fix her Portable TV when her favourite pirate-television program goes off the air, thinking the TV is broken...

Main article: Tin-Tin and the Mystery of the Broken TV

Satellite ChaserEdit

O'Shea's call for help is heard coming from the TV. ISC targets KLA as crash-landing on the oil refinery at A'Ben Duh, so Virgil heads for the refinery, planning to shoot down the satellite. But Brains picks up O'Shea's broadcast, indicating the DJ must still be aboard! Thunderbird 2 catches the satellite on its wing, canting it away from the refinery.

Give or Take a MillionEdit

Brains brings snow to Tracy Island at Christmas time.

Main article: Brains the Snow Maker

Brains helps out in the kitchen