Betamon is an Amphibian Digimon. It walks on four legs. Its personality is gentle, but although it is a docile Digimon, once Betamon is angered, it emits its "Electric Shock" (Dengeki Biririn) from its body.
- Electric Shock (電撃ビリリン Dengeki Biririn?): Generates more than 1 MV of electric current to strike the opponent.
- Fin Cutter (Cutter Fin)
- Water Tower
- Beta Slugger
- Water Shot: Attacks with a bursting stream of water.
- Mach Jab
Betamon's design may be derived from the Dimetrodon (Dimetrodon grandis).
- Betamon (ベタモン)
Official romanization given by the Digimon Reference Book and used in the franchise.
- Beta. Possibly short for betabeta (ベタベタ?) which means sticky, betanko (ベタンコ?) which means squashed, or Β, the second Greek letter.
A Betamon is a patron at Digitamamon's diner during the period where Joe and Matt work there.
Digimon Adventure: Anode Tamer and Cathode Tamer
Betamon appear as a recruitable enemy in the File Island Mansion—Left.
Digimon Adventure 02
Digimon Adventure 02: Tag Tamers
Digimon Adventure 02: D-1 Tamer
Betamon are enemies in the game.
Digimon Adventure tri.
A Betamon is listed on Maki Himekawa's computer as one of the Digimon that was reborn as a result of the reboot. .
Digimon Adventure: Last Evolution Kizuna
A Betamon is partnered to a DigiDestined. When it and its friends were playing on the beach two Eosmon (Ultimate) suddenly jump out of the nearby DigiDestined's phones and attack them in the hopes stealing their consciousnesses so that they could take them to the Never World where they would live inside their partner's memories forever. Betamon, and its friend Otamamon, fight back however, and after digivolving to ShogunGekomon and Seadramon manage to survive long enough to not get kidnapped, the Eosmon turning into data after the main one is defeated in the Never World. Another Betamon's partner's consciousness was successfully taken to the Never World by an Eosmon.
Digimon Tamers: Brave Tamer
Betamon are enemies in the Sinkhole, Two Tails, and Dark Taichi's Crevasses.
The Betamon card, titled "Dengeki Biririn", teaches a Digimon the attack Dengeki Biririn. Dengeki Biririn deals Virus-type damage to all enemies.
Digimon Battle Spirit
Betamon appears as a field enemy in the "Origin Town".
A Betamon has a conversation with a Crabmon near the waterfall in the Dragon Land, but is startled by the appearance of Nene disguised as a dragon Digimon.
A Betamon fell in Airu Suzaki's trap.
One Betamon is found in Mangrove Region and once Mameo talks to it, it will help Coelamon with the item shop. If fighting wild Digimon near Betamon, it may join the fight. Exiting and re-entering the Mangrove Region afterwards will cause it to return. After the first of the advanced shopkeeper Digimon is recruited, Betamon can be seen bathing in the fountain and talked to for hints leading towards other recruitable Digimon.
Betamon digivolves from Tanemon. It can digivolve into Seadramon, Coelamon, Shellmon, and Whamon. If not meeting the requirements to digivolve to Champion, it will digivolve to Numemon. If the waste gauge hits maximum, it will digivolve to Sukamon. When killed in battle, it has a 10% to digivolve to Bakemon. If the happiness and discipline gauges are empty, and it is scolded, it will digivolve to Nanimon.
Digimon World 2
As a wild Digimon, it will try to move away from player's digibeetle by one step if it's too close, unless it's partnered with Diaboromon. If so, then Betamon will move closer by 2 step each turn.
Digimon World 3
Digimon Digital Card Battle
Betamon is one of the first Digimon that the player meets, and teaches the player how to play card battles, and gives 30 EXP when defeated. The play can return to battle him again or speak about the rules, and after BlackWarGreymon is defeated, Betamon uses a more powerful deck.
The Betamon card is #063 and is a Rookie level Ice-type card with 730 HP, and worth 20 DP in the DP Slot. Its attacks are:
- "Electric Shock": inflicts 300 damage.
- "Fin Cutter": inflicts 190 damage.
- "Water Tower": inflicts 170 damage, and sets the opponent's attack to 0.
Its support effect is "If own HP is less than [or equal to] 200, opponent's attack power becomes 0.".
Digimon World Re:Digitize: Decode
Betamon digivolves from Budmon and Tsunomon and can digivolve to Seadramon, Ikkakumon, Sunflowmon, Vegiemon, and Ogremon. If it fails to meet the requirements for any of these Champions, it will digivolve to Numemon. If the waste gauge hits maximum, it will digivolve to Sukamon.
Digimon World DS
Digimon World Dawn and Dusk
Betamon is #029 in Digimon World Dawn and Dusk, and is an HP-class Aquan species Digimon with a resistance to the Water element and a weakness to the Machine element. Its basic stats are 95 HP, 121 MP, 76 Attack, 66 Defense, 59 Spirit, 53 Speed, and 22 Aptitude. It possesses the Thunder Sign 2 and Mist Cape 2 traits, and can be found in the Sunken Tunnel.
Betamon can be hatched from the Sea Patterned Digi-Egg.
Digimon Story: Lost Evolution
Betamon is #028, and is a Rookie-level, MP-type, Dragon-species Digimon with a resistance to the Water and Thunder elements, and a weakness to the Fire element. It possesses the Skill User and Curiosity traits, and the special skill Dive.
It dwells in the Packet Coast.
Digimon Story: Super Xros Wars Blue and Red
Digimon Story: Cyber Sleuth
Betamon is a Virus Water Type, Rookie level Digimon and uses 4 memory. It digivolves from Bukamon and can digivolve to ShellNumemon, Gekomon, Seadramon, Numemon, and Vegiemon. Its special attack is Electric Shock and its support skill is Mysterious Scale which nullifies received stat reduction effects.
In Complete Edition, Betamon can also digivolve to Airdramon.
Digimon Story: Cyber Sleuth - Hacker's Memory
Betamon is #055 and is a Virus Water Type, Rookie level Digimon and uses 4 memory. It digivolves from Bukamon and can digivolve to ShellNumemon, Gekomon, Seadramon, Numemon, Vegiemon, and Airdramon. Its special attack is Electric Shock and its support skill is Mysterious Scale which nullifies received stat reduction effects.
Digimon Story: Cyber Sleuth - Hacker's Memory (Manga)
Ponkotsu Quest x Digimon Story: Cyber Sleuth - Hacker's Memory
Betamon is an obtainable mercenary Digimon. It digivolves into Seadramon at LVL 11, MegaSeadramon at LVL 25 and MetalSeadramon at LVL 41. GigaSeadramon can be unlocked as a Burst Mode at LVL 65 with a second Burst Mode of Apocalymon at level 70.
Digimon Soul Chaser
A group of Betamon live together in a village known for having beautiful flowers. They lived happily together and played with each other every day. One day an Ogremon comes across the Betamon village and originally assuming it was an abandoned field decided to take all the flowers. After learning the Betamon live there it becomes pissed off that the Betamon had found them first and decides to kill them all so it could have the flowers for itself. After Ogremon beats up some of its friends, one of the Betamon summons up the courage to fight, suddenly digivolves to Dinohyumon, and defeats Ogremon. Ogremon, realising it can't have the flowers decides that if it can't have them, no one can – and destroys them and then leaves, swearing it would one day get revenge on Dinohyumon. The other Betamon celebrate Dinohyumon's digivolution, happy that as it was so powerful it could protect the village from Ogremon if it ever showed up again. Dinohyumon however, was a coward, and didn't want to do this so left the village stating it would get new flowers to replace the old ones though this was just an excuse to leave. Ogremon one day returns and attacks the village and was now even more powerful, having absorbed many flowers all over the Digital World. Dinohyumon returns just in time before any of them are killed though Ogremon uses its new power to warp digivolve to Titamon and defeat Dinohyumon. Dinohyumon had arrived with Biyomon, who made flower bouquets, and Biyomon angrily warp digivolves to Phoenixmon and rather than kill Ogremon, uses its "Starlight Explosion" to purify Titamon, turn it in a nice Digimon, and revert it back to Ogremon who then flees. After the battle Biyomon convinces Dinohyumon to tell the Betamon how it feels and is able to tell that them it isn't a super cool awesome warrior and that it is actually a coward and just wants things to go back to how they used to be. The Betamon tell it that it is being dumb and that they know it's a coward but that it digivolved to save them and can also be amazing, as well as a coward and that they all just want to continue being friends. The Betamon apologise for putting pressure on it and they all become friends again, then restore the flower field to its full former glory.
Digimon New Century
Digimon Project 2021
A Betamon is defeated by Agumon.
Notes and references
- Digimon Battle
- BT7-044: Betamon (Parallel Version)
- Digimon Adventure 02, "The Samurai of Sincerity" 
- Digimon ReArise, "A Bouquet Bundled with Affection"
- Digimon Fusion, "Final Fusion - The Fight For Earth!" 
- Digimon Encyclopedia: Voice Actors: Adventure Cast List
- This attack retains its original name of "Cutter Fin" in Digimon Battle.