He first appeared in SMG4: The Japan Trip. He is a famous manga artist living in Japan. He wields a magic pen called Inkweaver which can animate the things he draws to life. He uses it to amuse fans and stated he will use it to defeat the Anime Secret Service in the end of SMG4: The Japan Trip.
It is revealed on SMG4: The Mario Showdown that he has some relationships to the Inklings due to how he looked at Meggy and his mention to his place of birth which is Inkopolis.
In SMG4: The Splatfest Incident, Axol was accused of abducting numerous Inklings so that he could continue bringing his anime characters to life, but in SMG4: The Inkling Disappearances, he was revealed to be innocent and also kidnapped.
It is revealed that Francis had stolen the Inkweaver and was having his followers torment Axol, who tried to explain that Francis was using them. Presumably Francis had gone mad with power, though he still expressed desire to have waifus, more specifically an entire island of them.
It is currently unknown if he would become part of the cast, as many speculated that he will fill the gap since Desti's death in SMG4: World War Mario. However, it could be confirmed that he will part of the major cast since he is featured on the new channel banner on the channel.
Axol was born and hailed in Inkopolis. During his childhood, Axol can be seen drawing some anime characters. The present Axol stated that Inkopolis was a harsh place for anime lovers as two inklings can be seen laughing at young Axol for drawing anime as for the fact that they hated anime.
After he grew up and became a manga artist, he moved to Akihabara and become a popular celebrity across the Japan.
When a Monty Mole confused Saiko for one of Axol's creations, he explained that Axol is a manga artist and showed him to her. Fishy Boopkins seemed to recognise Axol and wanted to talk to him. When he, along with Saiko, SMG4 and Bob finally reached him, they explained to him that anime was banned in the Mushroom Kingdom, to which Axol replied that he would make anime legal again.
Axol leaves Japan, with Saiko, SMG4, Bob and Boopkins, but the airport of the Mushroom Kingdom doesn't allow the entry, because Saiko appearing to be an anime girl, but Axol creates some girls and the guards chase them. Meanwhile, the group can go back through the Mushroom Kingdom, and they came to a hiding place to make a plan.
Axol and the others finally reach Peach and present her a show with Fishy Boopkins singing about how great anime is. Peach says "ANIME IS AWESOME!!!" and proceeds to lift the anime ban. Axol then leaves the heroes and heads back to Japan.
While Axol doesn't physically appear, he is mentioned by the characters and there's even flashbacks of him. Due to the claw marks and an anime DVD in Meggy's house, Mario, Luigi, Tari and Desti suspect Axol of being responsible for Meggy's disappearance.
Mario, Luigi, Tari and Desti still suspect Axol for Meggy's disappearance, and when they hear the news of more Inklings disappearance, they believe Axol may have kidnapped them as well. However, the end of the episode reveals that Axol is not the one who has kidnapped the Inklings, but was abducted as well and his Inkweaver is in the hands of the Mastermind.
It is revealed that Francis of the Anime Cartel is a true culprit responsible for the abductions, as well as stealing Axol's trusty Inkweaver to make his very own island of waifus. Axol tries to tell Francis to reconsider his actions, but gets choked by Francis' "Mewtwo" before Francis and his anime minions leave. Later that episode, Axol is seen being spanked by two Anime Cartel members, but is then saved by Meggy and Desti and explains them that he would never do such a thing as kidnapping his own friends. Shortly before the end of the episode, Axol finds out that Francis has already gotten the Inkweaver to 70% to summon Super Saiyan Goku. He tries to fight them, but gets taken out by Francis' Goku in one punch and then captured again.
As Mario, Luigi, SMG4, Tari and Saiko come to save Meggy, Desti and Axol, Axol and Desti are still chained and see Meggy in the Ink Zuccer 2K. Francis gets excited about finally pushing her in the Zuccer to extract her ink and then pushes the lever from 50% to 100%. Fortunately, Francis is distracted by Mario's team finally approaching his base and leaves the room, and Axol manages to free himself by taunting Mewtwo by saying that he would rather choose Magikarp. Mewtwo gets infuriated, grabs him and throws him towards the Zuccer's control panel, occasionally breaking the chains which Axol takes advantage of. Mewtwo attempts to attack Axol who continues to taunt him, but Axol dodges him and makes him break right into the control panel, which then explodes and kills the Pokemon. The Ink Zuccer 2K then stops extracting Meggy's ink, saving her life. Axol proceeds to free Desti as well with the key that Mewtwo had just dropped. Later, Axol succeeds to take his Inkweaver back from Francis, which, however, Francis manages to steal again.
Axol reappears near the end of the video where he is enjoying his meal, only to be interrupted three times by Mario's screaming while Ronald McDonald attacks him. He uses his InkWeaver to summon Colonel Sanders and have a battle with Ronald McDonald, only to kick him in the Pingas and causing him to scream in pain. Afterwards Mario thanks Axol for helping him and asks if Mario wants to dine in with him and he agrees. Then Colonel Sanders vanishes after his victory much like how Axol temporary draws anime characters.
Axol is revealed to have left Akihabara and is struggling to find a house in the Mushroom Kingdom. He finds a house rented by the Heavy Weapons Guy, but is rejected from living there due to his excess anime replicas. The house is set on fire and Axol is still struggling to find a place to live. It also turns out he's burned down every other house he's been to.
Axol appears to be an anthropomorphic axolotl, an aquatic salamander. He wears a blue long-sleeved shirt, navy blue pants, and a belt that carries ink grenades. His weapon of choice is an Inkweaver, a large pen with a red claw on top.
Axol is a famous manga artist. Despite being popular, he is not highly prideful, but he is very friendly and helpful towards others, including SMG4 and friends, whom he helped in making anime and manga legalised again in the Mushroom Kingdom.
When being kidnapped by Francis, he become very "remorseful" for what he did, by saying that he is responsible for Francis stealing his magic pen.