Daniel Park -UI-

Daniel is a very kind and friendly person at heart, preferring to avoid unnecessary conflicts if he can, but will help those in need even in dangerous situations.

Initially, due to being bullied, Daniel would take out his anger on his mom. However, he began to realize just how much she sacrificed for his sake, filling him with deep feelings of self-loathing and regret for his actions towards his mother to the point of vowing to be a better person. He often cries whenever he is reminded of how he treated her, such as when in his second body, he was asked to act out a certain role as a test to see his acting skills only for Daniel to cry while reading the script as the part was similar to a part of his life, he regretted the most. So as to not trouble his mother financially, Daniel is very humble and responsible as he does not bother with materialistic things unless they cut down on his or his mom's living expenses (e.g., rice cooker) and is willing to work so he can pay his own living expenses.

Daniel is very sympathetic and protective of those mistreated, either because of their lack of strength or because of how unattractive they are, as he can relate to how both feel and is prone to stand up for them. Though it is implied in the Runaway fam arc he is respectful enough to not interfere in other affairs without permission.

Lack of self-confidence is often Daniel's biggest hindrance slowing his progress on his goal of trying to be a better person. In some cases, it leads to his being perceived as a pushover who is nothing but a coward. Fortunately, Daniel is constantly inspired by those who diligently work towards their goals, such as Euntae and Duke and is motivated to put more effort into overcoming his struggles to achieve his goals.

Due to his lack of social interaction with people around him prior to having his second body, he can be naive, much like Euntae, and is unsure how to act when placed under peer pressure. Likewise, he is easily deceived by perceived kindness. For example, he once accidentally agreed to become a host in a club and escaped the club while drunk. Moreover, he thought that Yui genuinely liked him for who he is while in his second body but was shocked when she treated him cruelly while he was in his original body. He also never smoked or intentionally drank before and didn't know how to refuse when putting under pressure to do so. However, this tends to create humorous situations and misunderstandings about him.

After temporarily losing his connection with his current body and being helplessly bullied by Logan Daniel regressed back into his old self before moving to Seoul. But after realizing that this world wasn't fair and how he needs to work harder to overcome that unfairness Daniel gets a way better appreciation for his old body and becomes more confident in it.

Daniel tends to become belligerent, overconfident, and apologetic when drunk.[4] In later arcs he is seen to also have an aggressive personality when in a tense battle.

in UI mode In this body, Daniel is among the strongest in the entire series. Even before he developed his technique and skill, he was able to defeat most opponents, solely relying on reflexes and instinct and is one of the few characters to naturally be on the level of skilled fighters with no prior formal training, the other being Johan. This, coupled with Daniel's ability to instantly replicate any fighting skill he sees just once, makes him one of the series' most formidable fighters by outdoing many others with their own fighting techniques.

It seems Daniel has become used to his abilities and immense fighting prowess in this body, able to dodge attacks merely on reflex with extreme ease, even while in deep thought. In some fights, he has found some attacks to be annoying.

His biggest testament to his fighting prowess is being one of the only people (the other being Euntae) that Jong Gun, a fighter of legendary status, acknowledges even once. Gun stated that, although Crystal was heading for a dangerous situation, if she is accompanied by Daniel and Euntae, then she's not in any real danger. However, he is not yet on the level of Jong Gun or Joon Goo, as he was easily defeated by Gun. Meanwhile, Euntae, his fighting equal, was soundly defeated by Jake Kim, who Gun promptly defeated.

So far Daniel's biggest weakness is that his compassion can often lead to unfair or synchronized fighters like Chuck Kwak and Justin Peng to overwhelm him. He also can't copy the determination that comes from the moves he copies, which makes opponents like Zack hard to fight.

Daniel's last trick is when he enters a state known as "Ultra-Instinct," in which he is rendered in a state between conscious and unconscious. He is able to maximize his fighting potential by utilizing every single move of his knowledge without hesitation. In this state he is so powerful that he is able to suppress Jerry Kwon and even able to break one of Gun's arms in their one-on-one fight. He was able to defeat 2 Crew Head (Jake Kim and Samuel Seo) simultaneously. He then proceeded to easily defeat Jerry Kwon and Lineman. After that, he completely dominated a raged Johan Seong in their fight. Although, he was not able to defeat Goo because he suddenly passed out, he still inflicted a huge damage on him. The downside of this state is that he is unable to control himself, making it difficult to discern between friends and foes.

In chapter 467, Gun has stated that Ultra Instinct was able to control (Gun Park can control UI) and the one who can control it can "adjust" their strength whatever they want. The one who aren't able to control UI will "adjust" their strength based on the opponents. For example, if the opponent is weak, UI will adjust its strength being weak for that opponent. If the opponent is strong, UI will just adjust its strength being strong for that opponent.

While he and his real body had the same techniques and movements, warren states that Big daniel had more experience using those techniques. Its as if hes more practiced and that little daniel was simply copying him.

In chapter 470 Jinyoung Park said that Daniels strength is on the level of the ones whom the Gapryong fist was fighting against and he is way past the level of the 2nd and 1st generation and also said the he wanted to see Daniel and Gapryong in a fight this implies that he is around the level of Gapryong Kim.

Martial Arts Used In Both Bodies Boxing Muay Thai Kyokushin Karate Taekwondo Systema Sophia-style Wrestling Capoeira MMA Aikido Invisible Attack (while he himself doesn't have the speed for it to be truly invisible and on the level of Sinu, James and Elite's when it comes to speed with the attack, but he has copied the concept) Hand Edge Technique Hard fist Innate Strenght (Kitae Kim) CQC Gapryong Kim style