If you liked the One Piece anime, the Anime-Planet community thinks you'd like:
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?
These series are about having fun and a few laughs. Don't let that decieve you though as they both can be very deep when neccesary. True the main characters are nothing alike:but If you enjoy One Piece, you'll get a kick outta Tengen Toppa Gurren-Lagann!
Both anime have non stop action and an amazing ray of characters that you are sure to love no matter how silly they are. There's plenty of meatbones to be nomnom'd because well they need to keep up their strength somehow to keep on fighting these epic battles. One Piece is more on the adventure side where TTGL is on the save our planet side. Try one if you liked the other.
Dimwitted Azuma Kazuma is a young man with a dream -- to create a bread worthy of the name "Japan", made by the Japanese people, for the Japanese people! With hefty bread-making skills, hands that have an uncanny warmth to help dough ferment, and will power like no other, Kazuma must put his delicious creations to the test as he struggles to become employed at the prestigious Pantasia bakery, for fame and glory! Yeast, beware... Kazuma is in the kitchen!
Both Yakitate and One Piece have constant humor which is basically over the top and ridiculous, but very funny at the same time. Even though the stories, genres, and characters are completely different due to the comedy, you can enjoy both.
In both anime, there is a team fighting with all they have towards a life goal. A young, amazing guy that sticks them together. I has great team spirit, and in some point, there are a lot of resemblenses in it.
Also, both have the same hilarious comedy along with the nostalgic drama.
Five years have passed since Goku and his friends defeated Piccolo Jr. and restored peace to the planet. Gohan - Goku's son - and a variety of good, bad, and morally ambiguous characters are back, and perpetually not ready for action! Aliens, androids, and magicians all hatch evil plots to destroy the world and it's up to Goku to save the Earth once more - that is, once he and his comrades train plentifully in preparation. Enemies will become friends and power levels will rise to unimaginable levels, but even with the help of the legendary Dragon Balls and Shen Long will it be enough to save Earth from ultimate destruction?
Goku and Bulma set out on their quest to find the seven Dragon Balls which, legend says, will grant any wish. On their way they make many new friends like Oolong, Master Roshi and Yamucha – but they are not the only ones interested in making their wishes come true. The Red Ribbon Army will do everything in their power to obtain the Dragon Balls and eliminate anyone who stands in their way, even Goku and his friends!
There are plenty of anime where a character with great powers fights his way through a load of villains while becoming stronger. Yet there aren't plenty that add such a relaxed, fun and adventurous feeling to it. Both One Piece and the 4th DB movie are pure enjoyment aimed at the same fans.
Hitomi was just a normal high school girl, until she was taken by the mysterious Van Fanel and dropped into a world of romance, magic and giant sword-wielding armor suits! Now Van, pilot of the famed armor suit Escaflowne; and Hitomi, whose hobby of predicting the future just became a frightening reality, must work together and fight the advanced technology of Zaibach: a force who want to shape Gaea to their visions of "peace". Follow Hitomi in her struggles against both these forces who seek to conquer this world, and her own confused heart.
Like adventures where the main thing is fighting, romantic feelings and caring towards other people who have had sad pasts and humorous yet very dramatic fights and events? Well then, you would like this anime because of the similarities and the action! The world of One Piece is full of fantasy, monsters, adventure, tragedy and comedy too! If you liked Escaflowne then check out One Piece or vice versa.