This character exists primarily or exclusively within the Sonic X continuity.
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
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Big the Cat (ビッグ ・ザ ・キャット Biggu za Kyatto?) is a supporting character in the anime series Sonic X and its comic series published by Archie Comics. He has a minor role within the series including his role in Sonic Adventure during the Chaos Saga of the anime series.



New World Saga

Big was first seen sleeping by a river with Froggy. However, he was awoken by the alarm from Eggman's base as it went to full alert as Sonic attempted to breach it. He later noticed the glow from the base when Chaos Control was induced. Being caught in the glow alongside Froggy, Big's fate remained unknown for some time.[2]

Chaos Saga

Eventually, Big appeared in the Mystic Ruins with Froggy on Earth. While trying to make sense of where he and Froggy were, Big discovered the purple Chaos Emerald. While he checked the gem out, Froggy was forced to swallow a part of Chaos, causing Froggy to grow a tail and go crazy. Froggy then ate the Chaos Emerald Big had found before hopping away with Big in pursuit.[3]

As Big searched for Froggy, he bumped into Christopher Thorndyke and Cream, who helped him look for Froggy. Along they way however, Big and his friends got attacked by Chaos and Dr. Eggman. Fortunately, Sonic and Knuckles showed up in time to ward off Eggman and Chaos, the latter of whom evolved into Chaos 2 during the fight.[3] After that, the group took Big back to the Thorndyke Mansion, where Big explained his plight with looking for Froggy. Combined with finding the Chaos Emeralds and the shards of the Master Emerald, Sonic and his friends broke up into separate search parties. Knuckles would look for the Emerald Shards, Sonic went to meet up with Tails to look for the Chaos Emeralds, and Chris went with Big to find Froggy.[4]

Figuring the best way to find Froggy was doing what he does best most of the time, Big decided to simply lie back and fish for him. Chris found Big's idea strange, but it paid off when Big managed to finally fish Froggy out of the water at Emerald Coast, only for Froggy to then be kidnapped by E-102 Gamma, sent by Eggman to find Froggy and bring him back to the Egg Carrier due to Froggy possessing both a part of Chaos and a Chaos Emerald.[5]

Big and Chris tailed Gamma back to the Egg Carrier's home base in the Mystic Ruins, only to soon hang on as the Egg Carrier took off and battled the X-Tornado before Tails managed to crash-land it on the huge battleship.[5] By the time Big and Chris found Froggy, they were confronted by Eggman and Chaos 4. Eggman forced Froggy to cough up the Chaos Emerald it swallowed, and along with one he had retrieved earlier, gave them to Chaos, causing it to evolve into Chaos 6, while also getting back the essence Froggy swallowed that formed Chaos' tail, leaving Big, Chris, and Froggy to get trapped within Chaos' body until Sonic and Knuckles worked together to defeat Chaos 6 and free them from the legendary beast. With the Egg Carrier losing altitude and heading for a crash landing, Big, Froggy, and Chris escaped the burning battleship on the X-Tornado. Landing back in the Mystic Ruins, Big and Froggy parted from Chris.[6]

Big reappeared following Chaos' transformation into Perfect Chaos and flooding of Station Square. Finding one of the now inert Chaos Emeralds after Chaos had drained them, Big returned it to Sonic, who used the remaining positive energy in the Emeralds to become Super Sonic and battle Perfect Chaos. In the end, Super Sonic purged Chaos of the anger and hatred that consumed it for centuries, allowing it leave in peace with Tikal.[7]

Egg Moon Saga

Big and Froggy spend most of their time enjoying the lazy life while Big fished. One day though, they got puzzled when they noticed the Moon after Eggman rebuilt it into the Egg Moon.[8]

Emerl Saga

Big was later a participant of the Emerald Fighting Tournament where he faced against Ella. However, Big lost the round as a result of leaving the ring while running away from Ella.[9]

Archie Comics

Wicked Sweet Shuttle Shenanigans

Big and Froggy found themselves in Paris fishing in the river, when they were interrupted by fireworks. They watched the fireworks and walked towards them to see where they were coming from. As Big remembered the fireworks, he is alerted by Froggy over to a disguised Dr. Eggman with Decoe, Bocoe and Bokkun. Big agreed with Froggy that he looked like Eggman, but ignored his suspicions as Nelson and Lindsey Thorndyke were unveiling the new space shuttle. Big watched as the space shuttle was shown to the crowd and Eggman unleashed various robots to attack the crowd for a distraction. Sonic, Tails and Amy rushed towards them as Big and Froggy overheard Eggman and realized that it was truly him. Big intervened as Eggman boasted about stealing the space shuttle. Eggman ran away after noticing Big, but is grabbed by his fishing rod and pulled back where Big knocking off his disguise. With his disguise exposed, Big and Froggy followed Eggman into the hall of mirrors with Tails, Amy, Rouge, Topaz and Eggman's robots. He was further joined by Sonic, Chris and Mister Tanaka as they searched for Eggman in the building.[10]

As they searched, another robot smashed through the building, and Big used his fishing rod to save Froggy. With all of them trapped in the sewers under rubble, Big and Froggy introduced themselves to Rouge, Topaz, Chris and Mr. Tanaka. Sonic, Tails and Amy eventually came to their rescue, but none of them were able to lift Big out of the sewer until Froggy jumped off him and they were able to lift Big easily. Tails, Amy and Rouge rushed to stop the robot while Big freed Froggy using his fishing rod. He managed to save Froggy as the defeated robot smashed through the hall of mirrors and joined the reunion with the cast after Eggman fled.[11]

Later adventures

Big would later travel back to Station Square and joined Sonic and his friends for a barbeque. He spent most of the time fishing in the swimming pool, until Chuck Thorndyke directed them to his telescope. He heard Chuck telling them that a meteorite with a Chaos Emerald inside would hit the South Pole. Chris decided to make it a competition that they would race to bring back to the Chaos Emerald; to which Big was picked to be on Sonic's team with him and Tails. Big and Froggy followed their team to the South Pole to grab the Chaos Emerald within the meteorite and worked with Sonic and Tails to grab it. He helped the team by attempting to fish out the meteorite and tripping Vector over his fishing line. His team arrived back first with the help of Sonic, but were unable to find the emerald in the meteorite. Chris arrived last with Charmy and Cream and had retrieved the Chaos Emerald, and thus winning the competition.[12]

Big stayed in Station Square with Froggy as Shadow from the Prime Zone arrived. He was fishing on the coastline as Sonic and Shadow confronted Eggman and Metal Sonic, where Shadow would use Chaos Control to leave with Metal Sonic.[13]


Big is always relaxed and easy-going.[1] As gentle and harmless as Big may appear to be though, when Dr. Eggman is threatening to harm Froggy, or certain people Big cares about, Big can be incredibly strong and will use his strength to protect his friends.



Froggy is Big's best friend. He spends much of his time together with him, and he gets very worried about Froggy when he runs away.




  • Big was the first character to appear in Sonic X.

See also


  1. 1.0 1.1 1.2 1.3 1.4 1.5 File:Sonicx-ep27-eye1.jpg
  2. Masaki, Hiro (23 August 2003). "Chaos Control Freaks". Sonic X. Season 1. Episode 1.
  3. 3.0 3.1 Yoshimura, Kiyoko (18 September 2004). "Pure Chaos". Sonic X. Season 2. Episode 27.
  4. Yoshimura, Kiyoko (25 September 2004). "A Chaotic Day". Sonic X. Season 2. Episode 28.
  5. 5.0 5.1 Houjou, Chinatsu (2 October 2004). "A Robot Rebels". Sonic X. Season 2. Episode 29.
  6. Urasawa, Yoshio (9 October 2004). "Head's Up, Tails!". Sonic X. Season 2. Episode 30.
  7. Shiraishi, Masahiko (23 October 2004). "Flood Fight". Sonic X. Season 2. Episode 32.
  8. Urasawa, Yoshio (11 December 2004). "Defective Detectives". Sonic X. Season 2. Episode 39.
  9. Masaki, Hiro; Houjou, Chinatsu (8 February 2004). "Prize Fights (Japanese version)". Sonic X. Season 2. Episode 45.
  10. Sonic X #8, "Wicked Sweet Shuttle Shenanigans - Part One"
  11. Sonic X #9, "Wicked Sweet Shuttle Shenanigans - Part Two"
  12. Sonic X #33, "Meteor Madness"
  13. Sonic X #40, "The End!"


  1. The world where Big comes from is not named in the anime and comics. The comics state, though, that Big and his friends traveled across dimensions on a parallel planet, Earth.