Sakkath

From Memory Alpha, the free Star Trek reference.

Sakkath was a young Vulcan male who accompanied Ambassador Sarek aboard the USS Enterprise-D in 2366 during the Legaran Conference. Sakkath used his mind to help bolster Sarek's emotional control during the negotiation, hoping to conceal the fact that the aging ambassador was suffering from Bendii Syndrome until after the conference. However, he was forced to admit Sarek's condition to Captain Jean-Luc Picard after the ambassador's ailment worsened beyond his abilities. (TNG: "Sarek")

Sakkath was played by actor Rocco Sisto.