In Silver and Scarlet, players generally recognize that the quality of a card often determines the superiority of its effects. However, this does not mean that low-quality cards are completely worthless. The value of a card is not entirely determined by its quality level; it's more important to consider the skills and effects of the character. For example, let's take William, who, despite being just an R-quality card in the game, still has potential.

William has a unique title in the game called "Elite Sailor," and he is a medium unit belonging to the Kingdom faction. In battle, he can deal melee area damage, which gives him an advantage in close combat. Regarding his skills, William has a rather practical ultimate skill, also known as his big move, called "Soaring Spark." When William retreats 2 meters from his main target during battle, he enters a special untargetable state that lasts for several seconds.
During this time, the enemy cannot attack or select William, thus providing valuable tactical adjustment time for the team. After a few seconds, William will throw powerful bombs at three enemy units within a 5-meter radius centered on himself. Once these bombs explode, each one will deal up to 100.0% of his attack power as physical damage within a 2.5-meter range to all enemy units. Compared to his combat skills, this output value is higher, although not as strong as the top-tier attackers, but it is sufficient in the early stages of the game.

In terms of combat skills, William has a unique Suspicious Drug effect. During the battle, when William's health first drops below 30.0%, he instantly triggers this magical skill, restoring 30.0% of his health. This skill allows William to gain a precious chance for survival in critical moments. However, it should be noted that this effect can only be triggered once per battle, so timing is crucial, and it can only be used on William himself, not on other characters.

His basic attack is a close-range attack, and when William attacks the primary target, he deals 85.0% of his attack power as physical damage. This close-range attack is straightforward without any special features. William's Adrenaline characteristic, however, boosts his burst capability. Every time he uses his ultimate skill, he gains an increased physical damage effect, allowing him to deal even more powerful physical damage to enemies for the next 6 seconds. This characteristic ensures that after using his powerful ultimate skill, William can maintain a high level of damage output for a period of time.

In William's skill release mechanism, you can also pay attention to the abilities after Blood Burst. There are even more powerful initial and super release effects. When William successfully triggers Blood Burst, his characteristics are further enhanced, changing the minor increase in physical damage to a moderate increase. When William enters the super release state, the damage from his ultimate skill increases directly to 120.0%. This significant increase allows for a very high burst of damage in a short time, making William's performance in battle even more impressive, whether in the initial or super release states.
The above is the relevant analysis of William in Silver and Scarlet. As you can see, William is suitable for use in the early stages when players have fewer characters. Of course, if you need additional support in the later stages, William can also be useful, as long as he is used at the right time, making him a good card to have.