| Yu Sheng De | |
| |
| Chinese Name | 于聖德 |
| Role | Support character, villain |
| KO Rank | N/A |
| Gender | Male |
| Species | Muggle |
| Aura | N/A |
| Battle Level | N/A |
| Abilities | N/A |
| Special abilities | N/A |
| Weapons | N/A |
| Status: | Hospitalized |
| Home World | The Gold Dimension |
| Alternate counterpart(s) | Ye Si Si (The Iron Dimension) |
| First Appearance | Episode 2, KO One |
| Portrayed by | Li Jie Sheng (李傑聖) |
Yu Sheng De (于聖德) is a psychotic former teacher of Tian Hong Guang. He used to teach at Yang Guang High School.
He kidnapped Tian Xin to prevent her students from getting into college, but was beaten by Da Dong's gang and sent to the psychiatric hospital at their teacher's request.
Alternate counterpart[]
The Iron Dimension[]
His alternate counterpart in the Iron Dimension is Ye Si Si, a member of the Ye He Na La family.