Maxwell Collins Maxwell Collins was the child of Lloyd and Devina Collins and the younger brother of Jess Collins . He liked superhero comic book s and alien s . When the Twelfth Doctor was trapped in 1972 without a working TARDIS , he lived with the Collins and became best friends with Maxwell . ( COMIC : " Moving In " ) He often wore shirts with superheroes on them , like Spider - Man ( COMIC : " The Pestilent Heart " ) and the Hulk . ( COMIC : " Moving In " ) History . On a school day in 1972 , Maxwell had Sugar Joy ! cereal for breakfast . He told his mum to get more Sugar Joy ! because each box came with a free alien toy . Six minutes later he took a school bus to school . That day , his sister , father , and mother had an adventure with the Twelfth Doctor which ended with the Doctor ' s TARDIS overloading itself to purge London of an alien disease . Two days later , Devina Collins invited the Doctor to live with them because he didn ' t have anywhere else to go . Maxwell greeted the Doctor and pulled him inside the Collins household when he tried to refuse Devina ' s hospitality . ( COMIC : " The Pestilent Heart " ) Three days after that , Maxwell encountered the Doctor resting his head against the TARDIS in the backyard . The Doctor told Maxwell he was trying to psychically encourage the TARDIS to reweave its outer plasmic shell . Maxwell joined in , but quickly became bored and asked the Doctor who would win in a fight : Captain America or Batman . The Doctor argued that Captain America would win , but Maxwell was certain Batman would . Their conversation reached an end when Jess walked into the backyard . After Maxwell went back inside , Jess commented that she thought the Doctor had made a new best friend . ( COMIC : " Moving In " ) About a day later , Maxwell came with the Doctor and Jess to the National Gallery . While the Doctor and Jess enjoyed the art , Maxwell was unimpressed ; at one point he said that John Constable was " no Jack Kirby " . The visit to the gallery was interrupted when a small monkey - like alien was released by alien hunters from Kolothos ( where hunting was outlawed ) and the hunters sent hounds to chase it into the gallery . The Doctor , Jess , and Maxwell followed the chase outside into Trafalgar Square where they encountered the hunters . The Doctor tried to stop them from killing the monkey - like alien and managed to knock out Broteas , but Broteas ' wife Skadi still managed to kill the alien . With their hunt over , Skadi and her son Tarquel took Jess and Maxwell aboard their ship , while Broteas was arrested on Earth . Because of Tarquel ' s disgust with the hunting and killing his parents did , Maxwell worked together with Tarquel and tricked Skadi into dropping her weapon when Maxwell pretended to threaten her son . After DCI Jack Hayes arrested Skadi , Tarquel then took Skadi and Broteas back to Kolothos to face justice for their crimes . ( COMIC : " Bloodsport " ) On Christmas Eve , Maxwell asked Lloyd if he was still getting a bike for Christmas . On Christmas morning , during a breakfast Devina put on for the whole street , Maxwell rode his new bike in the garden . ( COMIC : " Be Forgot " ) In 1973 , Jess wanted to join Hayes and the Doctor at the station when he was invited to come down , but Hayes insisted only the Doctor could come . Later , the Collins family were knocked out by Katya Dabrowski and her men , and taken to an apartment in central London . They were greeted by , who told them the Doctor was a threat to them and a powerful and deceitful alien . Ensuring the Collins family that the Doctor would never hurt them again , the Master used the artron energy in their body as a means of opening a portal to a time lock ed dimension , which they were also sent to . Jess , Devina and Lloyd were separated from Maxwell . Maxwell was aged several years by a small tornado . After spotting his father , Maxwell ran after Lloyd and watched as Lloyd was aged to death by a group of alien creatures . A being called Kiadine , who the Time Lord s had imprisoned on this world , reversed what had happened to Lloyd . The Master found Kiadine , and was offered his temporal powers , and the Doctor and the Master fought with each other over the power of the chronon storm , when the Collins family pulled the Doctor back , standing together against the Master . The Master attacked them , and this blast was repelled with the same artron energy in the bodies of the Collins family that had brought the Master to the dimension . The temporal effects on Jess and Maxwell were also reversed . The Master survived this attack and left , and with no - one left to keep time in check , the Doctor and the Collins family evacuated . After Gabriel ' s funeral , the Doctor said goodbye to the Collins family and left in a fully repaired TARDIS , believing he had outstayed his welcome . ( COMIC : " Doorway to Hell " )