徐奉 / Xu Feng (late Han)
徐奉 / Xu Feng enters the wiki through Hanji 924 as a palace eunuch exposed with 封谞 as an inside contact for 张角.
The source gives Xu Feng a narrow but structurally important role. His exposure briefly lets 汉灵帝 see that the rebellion problem does not line up with the old anti-party narrative, yet the 十常侍 shift blame, recall relatives, and preserve enough access to keep destroying later remonstrants.