- An Arm and a Leg: Gets all his limbs blown off doing a stupid stunt at the beginning of RB 4, spending the first episode as just a torso.
- Batman Gambit: Pulls one off along with Pohatu in order to dispose of Perditus after Pohatu discovered Perditus was the feared house serial-killer when he happened upon him hiding a body. Pohatu took his kill-list and returned to Tahu, who decided to kidnap Perditus and keep him in a closet with him under the guise of still being upset about Bionicle's cancellation and wanting someone to keep him company. Once Perditus and Tahu were made to leave the closet by Kopaka, he and Pohatu lured Perditus away from the remaining sets he was planning on deconstructing by stealing his Thornatus in order to 'get to Denmark'. Bumpy as it was, the plan did ultimately lead to Perditus being caught and jailed in a plastic bin of LEGO parts.Tahu: This whole time, we had to make sure that Perditus didn't know that we knew that he didn't know that we knew he was the murderer, and that we knew that he knew that we knew nothing about him being the murderer.Onua: Wow! That's so ridiculously complicated!Tahu: Yeah, in retrospect it was kind of a dumb plan.
- Butt-Monkey: Goes through a lot of abuse throughout the series. He even lampshades this in Reviving Bionicle 3, Part 2.Tahu: ugh. I am a victim of bad slapstick humor.
- Character Development: While his more childish side still shows up here and there, Tahu has gone from over obsessive about Bionicles ending to more neutral and accepting of it. By Anonymous hes even embraced the idea of a new wave coming in and even welcomes the dead bootleg into the group instead of using the plunger on him like he did the Hero Factory sets, as he knows that its like to be a punching bag for the fans.
- Expy: Of Master Chief from Arby 'n' the Chief, sharing his childish obsessions with the source material from which he hails from. Unlike Chief however, he's mature and competent when he really needs to be and doesn't actively try to troll people for his amusement. He also shares the same voice as Chief, Microsoft Sam.
- Flat "What": His reaction to Vorikis appearance.
- Jerk with a Heart of Gold: Tahu may treat his fellow Bionicle friends very, very poorly, but deep down he does care for them.
- Mid-Season Upgrade: In a sense. After he loses his limbs in a stunt and running out of spares in episode 1 of RB 4, he spends the rest of the episode as just a torso, until the end when G2!Onua provides him new custom made ones using the G2 parts, finally giving him actual limb articulation.
- Noodle Implements: During a flashback in Anonymous, Tahu strikes up a conversation with Onua in the hopes of getting some information on Gali's disappearance, proposing that they share their deepest, darkest secrets together. Just before he explains what he does whenever he hears the word 'scrungo', Onua decides he doesn't need to hear this.
- Noodle Incident: When he first met the Wave-1 Hero Factory sets, he did something to them with a toilet plunger that the other members of the collection don't like to think about and describe as 'weird and gross'.
- Red Oni, Blue Oni: The fiery, hot-tempered Red to Kopaka's Blue.
- Too Much Information: Whatever he does when he hears the word 'scrungo', Onua doesn't want to know.
- Adaptational Nice Guy: In the original series, Kopaka was calm and thoughtful, but also cold and fairly distant. Here, he's not only reasonable, he also cares deeply for those around him and is overall a kinder and more empathetic presence.
- Berserk Button: As of the Reviving Bionicle 4 Ep.1, he hates being called a "dust collector" and the idea of selling away toys that brought joy to children, like Pooh Bear.
- Expy: Of Arbiter from Arby 'n' the Chief, sharing his Only Sane Man status and voice of reason role among the characters. He's not as depressed or as much a doormat, however. He also shares the same voice as Arbiter, Microsoft Mike.
- Fan Boy: In Reviving Bionicle 1, he is shown to be a fan of BBC's Sherlock. This turns out to be a case of Early Installment Weirdness, since it's never expanded upon beyond the first episode.Kopaka: I hate Steven Moffat so much.
- Red Oni, Blue Oni: The cool, sensible Blue to Tahu's Red.
- A Day in the Limelight: He's ultimately the protagonist of Anonymous, which focuses much on his depression and possible Sanity Slippage following the reboot's cancellation.
- All for Nothing:
- His brilliant plan to become popular on YouTube and bring back Bionicle to ease his troubled mind involving blowing himself up with a firecracker amounts to only two views.
- Played for drama in Anonymous when he scolds Kopaka for believing his and Tahus movie brought Bionicle back.
- Establishing Character Moment: The first thing he does in the show is blow himself up with a firecracker on camera in the hopes of going viral and bringing back Bionicle.
- Incredibly Lame Pun: Is guilty of these at times.Onua (after he has been shoddily rebuilt by Pohatu): Well, the people of Po-Koro know how to sculpt, but they sure aren't good plastic surgeons. Get it? Plastic. We're plast-Tahu (annoyed): Yeah, I get it.
- Butt-Monkey: Aside from Tahu Stars, Good Guy goes through the most abuse throughout the series. Whether it be verbally insulted or physically harmed by Tahu and others, he can never get a break.
- Lovable Nerd: Is an adorable nerd, lampshaded by Pohatu Mata in Episode 3.Pohatu: Good Guy, why are you such an adorable Danish nerd?Good Guy: I'm not a nerd. And I'm Swedish, you uncultured walnut.
- Took a Level in Jerkass: Shows shades of this in Anonymous when he, Good Guy '08 and Lewa Mata decide to prank Tahu by using a bootleg as Bionicles replacement, but he really shows his Jerkass side in RE 4, Ep.1 when he viscously insults Takanuvas art, even after Bad Guy and Jaller Mahri praise it.
- Adaptational Jerkass: In the main series Takanuva is a noble, cunning warrior who loved his friends deeply. Here hes still nice to his friends...but treats Voriki like garbage. Constantly putting him down verbally and calls him a "fake hero" to his face. He does eventually warm up to him after discovering he was used as a test subject with Denmark and the Hero Factory sets against his will and grows to respect him before he dies.
- Character Development: Goes from absolutely hating Voriki for even existing in the first place and makes clear jabs at his expense, to feeling pity for him and mutually accepting the other Toa after discovering his past as Greg, and later burying the hatchet with him and offering his hand in friendship after defeating Evo and Surge.
- Me's a Crowd: Unlike most other characters, all of Takanuva's various alternate forms make frequent appearances and interact with both other characters and each other. The series focuses primarily on 03!Takanuva however.
- Talking to Himself: Literally. First appears in the series via a sight gag of 08!Takanuva talking with 01!Takua, then frequently appears again having conversations with his many alternate releases together.
- True Art Is Incomprehensible: Played for Laughs as he becomes a painter in between RB 3 and 4 as a way to cope with Voriki's death. All his paintings are hilariously subpar but have ridiculously long and flowery names.
In actuality, he was Greg, an original character that Tahu and Onua built. Initially constructed as a sacrificial lamb (long story), Tahu and the others quickly befriended before his untimely demise. Evo and Surge would dig up his head and used it as the base for Voriki to act as a sleeper agent of sorts
After dying at the end of RB 3, he makes his return in 4 in a new body, once again going as Greg.
- Exact Words: Essentially how he came into being. After Kopaka finds Tahu and Onua trying to sacrifice toys to the garbage disposal, he tells them "to find someone who wants to willingly be sacrificed next time". Tahu and Onua decide the most logical route to be? Make their own person.
- Heroic Sacrifice: Twice, in fact. First when he falls into the garbage disposal while trying to save Kopaka from falling in, and then later on when he jumped in the way of Denmarks last blast to prevent Takanuva from dying.
- Joke Character: Both in and out of universe. As he was initially created as a hoax he really serves no point to the Bionicle franchise or mythos and doesn't really even fit. This carries over to his portrayal in the series proper. Evo and Surge even admit that the only reason they rebuilt Greg into Voriki was because they thought it was a funny joke.
- Named After Someone Famous: Tahu decides to name him after Bionicle head writer Greg Farshtey, who he refers to as "someone very important to him"
- Walking Spoiler: Difficult to talk about him without revealing that he's Tahu and Onua's creation Greg
- Adaptational Villainy: Evo and Surge are shown to be just as kind and heroic as they were in their stories...that is until the two plot to kill all of the Bionicle sets as a way to keep Hero Factory from being forgotten.
- Adaptational Villainy: Played with. In the original canon, his hands aren't necessarily clean, since he's secretly working for Velika, and may have had a hand in the deaths of Tren Krom and Karzahni, but it's ramped up to eleven here, where he single-handedly disassembles numerous popular characters as revenge for taking the spotlight from bit players like himself, to the point where characters like Lewa would be chosen to ride around in his Thornatus instead of himself. However, this gets muddled when it turns out he went on a rampage only under the influence of Denmark, and in reality isn't quite so murderous.
- Easily Forgiven: He seems to be so; After Denmark is seemingly shut down, and Evo and Surge are jailed, he is freed from the LEGO prison and asks Lewa if there are any hard feelings between them over what happened in the past. Lewa claims there aren't, but then it's revealed he and the Good Guys are preparing an ambush for him.
- Adaptational Villainy: A more comedic example, Kapura's villainy consists of capturing Good Guys 2006 and 2008 and calling them 'plebians', with the aid of a couple Makuta.