Traits（或作「屬性」或「分類」） are in-game groupings or categories that are important for specific Active Skills, 寶具, and 活動. Some of these categories are not explicitly stated or intuitive information, such as Dragon, while others come from sources such as a Servant's Passive Skills or Biography.
For Alignments, see here.
- 兩儀式〔Saber〕, 尼古拉・特斯拉, Attila the San(ta), Asagami Fujino, 羅慕路斯, 弗朗西斯‧德雷克, Mozart, 謎之女主角X, 兩儀式〔Assassin〕, Mysterious Heroine X (Alter), Sherlock Holmes, Sessyoin Kiara and Abigail Williams are the only servants who are not weak to Enuma Elish. They all happen to be Star attribute Servants except 兩儀式〔Saber〕, Asagami Fujino and 兩儀式〔Assassin〕 has the Man attribute, Sessyoin Kiara has the Beast attribute and Abigail Williams has the Earth attribute.
- 牛若丸 is the only 女 in Brynhildr's Beloved.
- Kara no Kyoukai Collaboration Event was the first event to make traits and alignment important outside of the context of specific skills or Noble Phantasms.