yes he had to in order to become a shinigami again
also he became a hollow during his vizard training and when orihime was screaming for help from him
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Yes, Ichigo has an inner hollow which he got, when trying to get his lost shinigami powers back in Urahara Shop.
Ichigo becomes a hollow when he loses his temper or when he looses too much reitsu as his inner hollow looks for a moment when his behaviour is volatile.
He becomes a hollow in Byakuga fight. Then again when Yammy and Ulquiorra visit Karakura town. After that he goes to training for controlling his hollow power with the Visoreds (Visards) namely Shinji, Hiyori and co. There he is able to control his hollow power for only a few seconds.
When he fights Grimmjow(6th Espada) in Heuco Mundo he perfects hollowfication which enables him settle in hollow form for a long time.
In his battle with Ulquiorra(4th Espada), he undergoes complete hollowfication when he passes out due to injuries and devastates Ulquiorra in his 2nd resurrected form.
He also loses is shinigami powers closer to when he fights Aizen. He turns into Getsuga and uses the Final Getsugatensha.
By this time he thinks he has defeated Aizen, but in the end Urahara comes in and the seal he implanted earlier on activates and destroys Aizen. (or so we think)
Now we think Ichigo only has Hollow powers but he may get his shinigami powers back later. But at least he has mastered how to fully hollofy at will. (As in fully hollofy I mean turn into the form he unwillingly turned into when he was fighting Ulquiorra)
Ichigo's "Hollow" is a Homo Sapien Sapien.
"Hollow Ichigo."
She doesn't have a Hollow in the series. However, she does become a Shinigami-Hollow hybrid in the Bleach:Fade to Black movie. But Ichigo purifies her with Zangetsu, killing the Hollow inside her.
Ichigo's hollow doesn't shed tears at all.
Ichigo's hollow doesn't have a name it is just Hollow or Hollow Ichigo Although many fans have been giving him names like shiro or Hichigo, which confuses many ichigo's hollow just doesnt have a true name he does have a name ichigo has said it numerus times too its ogihci you must not wach too many episodes i call him no-name
Due to the fact that hollow ichigo's powers haven't been fully demonstrated or explained, we do not know
To unlock Hollow Ichigo in Bleach: Blade of Fate, you need to complete the story mode with all characters, including Ichigo. This will unlock an alternate story mode called "Zanpakuto Tales," where you can select Hollow Ichigo as a playable character.
Due to the fact that hollow ichigo's powers haven't been fully demonstrated or explained, we do not know
No. He does not. He is INSIDE ichigo. He cannot. It's impossible.
No, Ichigo's zanpakuto does not change in his hollow form. If you watch the "Zanpakuto Rebellion" arc, you can see this when Ichigo is fighting against the materialised form of Zangetsu, his zanpakuto. Ichigo cannot call on Zangetsu's power, and so he cannot use Bankai. Instead, he releases his hollow form, which is a raw power inside Ichigo. So Ichigo's zanpakuto remains completely unchanged while in hollow form.
He does not become a Vasto lorde. He is a vizard, a shinigami with hollow powers, as opposed to arrancars, hollows with shinigami powers.
no, he was just too tired or his inner hollow was winning over ichigo