(One Piece)

Monkey D. Luffy is an unlikely hero because of the way he acts. Very
child-like, idiotic and blunt. However, those qualities make him a
straight-forward and honest guy, which doesn't make him sway away from
anything that he decides on doing. His courage is a contagious force and
makes others follow such a hero. Monkey D. Luffy's legacy will not be
known for his own accomplishments, but for helping others in need of
true justice. (Anonymous)
He may not be the brightest person on the sea, but his heart is pure
solid gold. He would do anything for his nakama, even die if necessary.
He is always ready and willing to help and fight for the underdog, the
oppressed, and those who cannot defend themselves. He never gives up or
backs down until the wrongs are righted, the evil is vanquished, and the
hurt and troubled are brought to safety. He is an inspiration to
everyone he meets and helps to become stronger people themselves. He is
steadfast in his convictions, brave beyond measure, a true, open friend
and kindhearted to a fault. He is also one of the most bad-ass warriors
in anime - he has honed his rubber body into a fierce fighting machine,
creating and perfecting maneuvers that would be impossible for anyone
else. You just DON'T mess with Luffy, his nakama, or the innocent,
unless you want to get thoroughly thrashed. He uses his strength for the
sake of others, not just for his own gains. These reasons, and more,
are why he is my absolute number 1 pick. (InnerDemons)
Definitely one of the most popular favorites. He is mad, but he also
knows and values his friends. Like all animes, the thing that iconizes
Luffy is his ambition. He knows what he wants, and at the same time, he
knows that he cannot do it by himself to get there. Hence, he values his
friends more than his life. Willing to sacrifice himself to tackle on
the most difficult of opponents for his friends. I guess self-sacrifice,
the value of friends and determination to win (aka kick the enemy
flying) is what inconizes Luffy and what I like him alot. (Stoopider)
(Dragon Ball Z)
The Great Hero of my generation. Goku is the strongest character seen in any anime. He haves an incredible amount of physical power, and an eveve greater will power. He cares a lot for his friends and family to the point of being willing to sacrifice him self for them. We get to enjoy a lot of Goku's life in the DB saga, how he is funny, a little clueless, incredibly strong, innocent, a good father, a good friend, calm person, and even if he isn't really one, he is really human. (satuross)
ZORO RORONOA
(One Piece)
Three sword style, the indestructible Rorona Zoro is truly one of my
favorite bad-asses of all time. But its the back story that moves me
more than the fights. As a youth, he and his greatest rival, also his
best friend, sparred constantly. They swore, one day one of the two of
them would be the greatest swordsman in the world. Before they could
accomplish that, she died in an accident. The simple kind of accident
that reminds you that even the great are mortal. To honor their promise,
he adds her one sword style to his two sword style so that the two of
them can, at least that way, be there together as Zoro fights his way
across the sea to become the greatest. (Shardan)
GON FREEKS
(Hunter X Hunter)
Gon is cool. He is innocent and friendly. He is determined and stubborn. He is a really great friend and prioritizes what's important. He is a role model to everyone, even if he is still kinda young. (silever)
NARUTO UZUMAKI
(Naruto TV Series)
Even though he's usually just a clown, when it comes down to it he will never give up. When he wanted to become braver he went hardcore, stabbed his hand and pledged to become better. He was treated like garbage by everyone as a kid but can still cherish his friends. His friends mean more to him than his life. (Xyphon)
SASUKE UCHIHA
(Naruto)
Sasuke was, all along, much more than the typical "silent bad boy" of anime culture. With addictive sub plots that twist through the main story arcs, and character motives that remain hidden all along, Sasuke captured my attention, along with my fandom. (Anonymous)
(Bleach)

Ichigo is a character who struggles with being different, and he's
managed to adapt, in a way, to the attention that his hair colour gets,
by being strong enough to deend himself and by getting good grades so he
doesn't get much attention from teachers. Despite his reputation for
gangster-like violence, he is also highly protective and accepting of
most others, as with Sado and Inuoe. When it comes to his Shinigami
power, Ichigo breaks all the rules, rising at such an extraordinary
speed as to rival Byakuya, who slaughtered him initially. What makes
Ichigo a great character is his ability to learn, change, and grow, as
well as his resolve not to give up without a fight. At the same time,
he's not perfect and he knows it. He just compensates for this
successfully, which many other characters in anime do not. He is not
weak or two-dimensional, and at the same time he is not all-powerful.
Overall, Ichigo is a well-rounded character who can still learn, change,
and grow unpredictably, a fact reflected in almost every other Bleach character who stands with him. (Anonymous)
Even though he's so powerful, he's just a teenager, and I feel this
is very well conveyed both in manga and anime. He makes a lot of stupid
mistakes and it makes him the more human and just plain sweet. ^^
Besides I believe orange-haired guys are just plain cool. (Anonymous)
One of my favourite shounen manga/anime heroes, not only is he tall
compared to the usuall 15 year old protoganists, but also carries a huge
soul slayer to cut down his enemies, and best of all: he doesnt
hesitate to run his enemies through with his if he deems it necessary. (eyesotope)
KENJI HARIMA
(School Rumble)
He's the perfect representation of the tough guy with a heart of
gold. Harima's honest take on life creates both drama and comedy.
Throughout School Rumble, it is impossible to not root for Harima. (TomWorth)
SPIKE SPIEGEL
(Cowboy Bebop)
Spike's pure bad-assery and devil-may-care attitude coupled with his
ability to defeat any adversary that blocks his path, whether it be
human, machine or anything else, and his die-hard stubborn idea that his
one true love is still waiting, puts him in the upper ranks of the top
100 characters of all time. (StrykerBlue)