Hollow Ichigo (often called White Ichigo) is the actual manifested form Ichigo's zanpakutō, Zangetsu.He usually mockes Ichigo all the time for being inexperienced and soft hearted. Hollow Ichigo is a reckless fighter. Hollow Ichigo can use Ichigo's trademark abilities Getsuga Tenshou and Bankai: Tensa Zangetsu. He can lock his enemies down with Zangetsu Strike and High Slam. He can even use stronger version of Ichigo's Black Moon Slash to annihilate his enemies easily. He is also a master of the hollow-like flash step, Sonido.
Kurosaki Ichigo is the Shinigami substitute from Karakura Town, who got his shinigami powers from Rukia Kuchiki and his Hollow-like powers from his mother. Once he learned how to control his inner hollow, he became one of the strongest soul reapers out there. Ichigo can rip enemies apart with Getsuga Tenshou and Black Moon Slash. Ichigo can also compress his reiatsu into his blade to slash enemies nearby with Reiatsu Blade. He can turn into two forms consecutively:Firstly Bankai: Tensa Zangetsu/Hollow Mask form which provides Ichigo immense speed beyond imagination, secondly and lastly the very powerful True Hollow Form which only can be used when Ichigo is near death line.
True Hollow Form
Madarame Ikkaku is a violent, fight-loving, and rude soul reaper who finds his true spirit while fighting, he is no exception since members of 11th Division are all fight-lovers. He admitted himself to defeat Zaraki Kenpachi twice, both attempts to do so were failed before he found himself under the banner of Kenpachi. Even though he isn't even a captain yet, he has reached his Bankai: Ryūmon Hōzukimaru;which turns him into a monstrous fighter with giant blades. He can effectively Counter attacks against him, and he can cleave his enemies with Great Cleave. He can use his bankai to its limit, gaining immense physical strength with Dragon Charge, and when his rage is fulled he can annihilate his prey with Final Madness.
Before his betrayal Aizen Sōsuke was a captain of Gotei 13. His schemes made the world tremble to its roots. His famous zanpakutō Kyoka Saigetsu is a very formidable weapon, able to control enemies' five senses. As the leader of Arrancars, Aizen can harm enemies around with Kyoka Saigetsu, surprize them with Hypnostrike and Absolute Hypnosis, disintegrate an enemy with Hadō#90 Kurohitsugi.As a former shinigami, he is a master of Shunpo.
Byakuya Kuchiki is the proud leader of the Kuchiki clan and captain of the 6th Division. He often underestimates his opponents, is very confident and preserves his calm nature most of the time.His zanpakutō, Senbonzakura can shred his enemies into pieces. He can bind his enemies with Bakudō#61:Rikujo Koro. His Bankai: Senbonzakura Kageyoshi along with Senkei together can tear multiple opponents down. Even all those are not enough he can compact his reitsu to deal the last blow with his final form Shūkei Hakuteiken. As a shinigami, he is quite mobile thanks to Shunpo.
Uryū Ishida is the last mixed blooded Quincy who was seperated from Soul Society's wrath. Although they are enemies in blood, he helped the Soul Reapers several times, being a close friend of Kurosaki Ichigo. His tutor was his grandfather, Soken Ishida, who taught everything he knew before he was killed by a group of vile Hollows. Ishida can snipe enemies afar with Ginrei Koyjaku and Seele Schneider. He can rain down arrows upon his prey with Licht Regen and can construct the holy pentagram Sprenger using a few Seele Schneiders. As a last stand, he can use the forbidden Final Quincy Form inreasing his power and accuracy drastically. He is also very trained on Quincy flash step, Hirenkyaku.