Tsukasa Shiba

Tsukasa Shiba (シバ・ツカサ) is a character that appears in the Gundam Build Divers television series.

Personality & Character
A mysterious hooded figure who was once Ayame's master, he is the leader of the Mass-Divers and also a former friend of Koichi. Despite being a high ranking Build Diver, Tsukasa's hatred towards the GBN is not fully explained. However, he did call GBN a world full of "lies" and "deceit".

History
Four years ago, Tsukasa was an old friend of Koichi Nanase when they played Gunpla Duel. When Gunpla Battle Nexus Online became popular, he quit Gunpla Duel and his whereabouts became unknown. About two years later, Tsukasa resurfaced as a mercenary in GBN and also sold Gunpla to those in need. He assisted the force Le Chat Noir in a battle, and warned them that their opponents would get tougher and they should stop using only SD-type Gunpla. Using the opportunity, he also peddled his real-type Gunpla. His warning came true, and the force suffered a string of defeat. In a desperate attempt to stop their descent, the force's leader, Kozy, made a deal with Tuskasa, acquiring from him a LM314V23/24 V2 Assault-Buster Gundam in exchange for his own custom SD Gunpla, that was built using parts data contributed by various members of Le Chat Noir. When the force still lost, it lead to a downward spiral, ending in the force's disbandment. When Tsukasa was approached by Ayame, who wanted to get the SD Gunpla back to save Le Chat Noir, he made her an offer - work for him and he would give the Gunpla back if she worked hard enough.

In the present, he noticed that the beginner, Riku Mikami, had somehow caught the attention of high-level players like Kyoya Kujo, Magee and Tigerwolf, and ordered Ayame to monitor him. When Ayame inadvertently stopped a ploy by a Diver pretending to be Shahryar and his brother, Tsukasa ordered her to follow along with their plan against Riku and his friends. When Do-ji began to panic at Riku's rising strength, he sought out Tsukasa to obtain a Break Decal. When the Break Decal was activated, Tsukasa ordered Ayame not to interfere as Do-ji was a "valued client" and wanted to see his work in action. Tsukasa soon learned of the Coalition of Volunteers and their desire to stop his work. He lured to his base an agent of the Coalition, who was pretending to buy a Break Decal, and had one of his mercenaries shot the agent, logging the agent out. When the Coalition assaulted his base, Tsukasa sent out an army of Mass-Divers to defend his base.

As he watched the battle from his command room, he praised the Coalition's high ranking players for their persistence. Suddenly an alarm alerted him to Riku heading straight to his room, and this both surprised and perplexed him as he had already put protections in place. He then ordered Ayame to stop Riku. When Riku and Sarah finally arrived in his room, he calmly asked how they know where he was. Riku sidestepped the question and said that he would not forgive Tsukasa for what he did to Ayame and his distribution of Break Decal. In response, Tsukasa said that he also would not forgive the GBN world, which he says is full of lies and deception, and vows to break it.

As he explains to Riku and Sarah, he feels GBN is a dull and boring world where everything is false and the players and their Gunpla need to be struck down for accepting such a "false Eden". However, a combination of Sarah's concern as to why he was "crying" and Tigerwolf nearly capturing him caused him to reveal his status as a Guest Haro and suit up within a MA-08 Big Zam, activating one last Break Decal and bringing it up to its "Final" level, intending on taking down the entire server but being impressed he was actually ready to bring down the entire game. However, his plan was stopped when Riku's Gundam 00 Diver Ace unleashed a pair of energy wings and nullified the effects and his Gunpla was destroyed.

Through an associate, Tsukasa contacted Riku, demanding him to visit him at a certain location with only the 00 Diver Ace in order to get back Ayame's Gunpla. When Riku arrived at the location, he finally showed his face and revealed he was going to show him a real Gunpla Battle. He forced Riku to participate, revealing his Gunpla Astray No-Name. A brutal battle ensued with Tsukasa showing his brutal side in fighting Riku, tearing apart the 00 Diver Ace. To his horror, however, Riku came out on top at the end. Defeated, he attempted to slink away before Koichi caught him. Realizing his old friend was the one behind GBN's attacks, he wanted to know why, but he refused to elaborate and tackled his old friend when he tried to get him to let go of his hatred. He backed down when Koichi asked him the same question Sarah did, slinking off into the shadows.

Relationships

 * Ayame
 * Tsukasa was her master until she betrayed him and his Mass-Divers to help Riku during the assault on his base.


 * Koichi Nanase
 * Tsukasa used to be a close friend to Koichi, before he quit playing Gunpla Duel.