There is clearly a great significant increase in Ichigo's speed, power, agility and skill however, the boost is only available for a limited time. But the boost in power and skill is indeed significant. However, there are also times wherein he is unable to control such hollowification. There are a lot of variations to his shinigami form, and each variation possesses a significant level of. Later, he was able to control it through the help of the visoreds who were half shinigami and half hollow. The strongest form is the Final Getsuga Tensho. That incident made Ichigo gain also his hollow powers, but it wasn't stable, and something that he could control at first. During the ritual or process, Ichigo had undergone hollowification however, he was able to put a stop on it, and regained his shinigami powers back. At that time, Ichigo was left with two choices wherein he would become a Shinigami if the process was successful, but he would also become a hollow if it would fail. Ichigo's first traces of hollow powers were first found during the time wherein Urahara helped him regain his Shinigami powers after it was being cut by Byakuya.

The final getsuga tenshou