If you liked the Tiger & Bunny anime, the Anime-Planet community thinks you'd like:
Kyu has always been interested in solving mysteries. After assisting in a murder case, he earns the opportunity to take the entrance exam for the Dan Detective School (DDS), a famous detective school established by the equally famous detective, Dan Morihiko! DDS is trusted implicitly by the police and receives their absolute cooperation in all matters, and its students are often able to crack even the most difficult cases. Can Kyu, along with fellow classmates Megumi, Kintarou, Kazuma and Ryu, meet the demands of the school and the crimes that cross their paths?
These series may not seem similar at first glance, due to one being a detective mystery and the other about superheroes. However, there are similarities that go outside the genre. The genres in themselves are not that different from each other after giving it some thought, both featuring gifted individuals dealing with criminals and bringing about justice. They both have fairly large ensemble casts, and while the episodes focus on two main characters, there are episodes that deal with each member of that main ensemble. Detective Academy Q isn't exactly a competition in the way that Tiger & Bunny is, but there is a spirit of competition with the main characters, not to mention the rival class from Detective Academy Q that tries to 'outsolve' the protagonists. While most episodes of both series deal with different crimes that are wrapped up in a matter of episodes, they both have a larger mystery that is ever present throughout the series.
Gonzo does it again with this action-packed mecha comedy. She's an ordinary high school girl. He's a counterterror agent assigned to protect her from those who would steal the information locked in her mind. OK, so she's not so normal after all. Armored Slave battles and lovers' spats abound as Sousuke and his comrades try to track down the mysterious Gauln before it's too late.
Both series feature characters trying to balance their personal lives with their lives fighting against the villains of the series. They also mix together madcap humor with dark backstories and tense, dramatic situations.
Humanity is on the brink of extinction after a devastating space war. Vicious packs of mercenaries known as "Vultures" comb Earth's remains for weapons, supplies, or anything else to give them power. Young Garrod Ran, an orphan of the war, is hired to rescue a kidnapped girl. But in time, he discovers that his target is a powerful enhanced human called a "Newtype" who is set to be the target of terrible and inhumane experiments. Now, Garrod and his new friends must escape, while trying to save the human race from repeating its mistakes yet again.
With the same action that you've come to expect from anime like this, but without all the advertisements that you see on all the mechs. This anime is great for those who want not only a compelling story line, but also those who love action packed segments with mechs!
Both are colorful action series with memorable characters and great action, as well as a lead that seems silly but is far more capable than you first assume. They also have a parent/child relationship that is an important part of the backstory. Star Driver is more focused on typical tropes of anime high school characters (including a love triangle) and has a fair amount of sexual innuendo, while Tiger & Bunny focuses on adult characters (who mostly take a backseat in Star Driver), but I think these two are similar enough in tone to be a worthy recommendation.
Simon lives a boring life in the underground village of Jeeha, where his main job day in and day out is to dig tunnels. His close friend Kamina, however, longs to bust out of their oppressive existence and reach the surface world where open skies and adventure await! One day, during his usual digs, Simon discovers a robot with a big face buried amongst the rocks. No sooner has he shown Kamina his mysterious find when two beings from the surface crash land into Jeeha Village - one is a gun-toting woman calling herself Yoko and the other is a terrifying mecha piloted by a Beastman! Seeing their chance to escape village drudgery, Kamina rallies Simon and Yoko to defeat the invader using their new robot, Lagann. However, upon breaking out onto the surface world, Simon, Kamina, and Yoko encounter enemies more powerful than they could have envisioned. Their fight for adventure just turned into a war for the survival of the human race - will their lust for freedom hold out against such terrible odds?