Doctor Syakuei Yoshiyama (好山錫兵博士 Yoshiyama Shakuhei hakase) is a young mathematician and biologist that, in the year 1999, felt in love with an artificial life-form (C-Life) that he created in a computer. Somehow he managed to enter the computer world to stay with his loved one, and the half human, half C-Life Pulseman was born from their union.
- The name Yoshiyama means "pleasant mountain", and Shakuhei means "Tin Soldier".
- The English Wii Shop Channel description of the game says that Doc Yoshiyama and Doc Waruyama are the same person, Yoshiyama's mind becoming twisted when he emerged back into the real world. However, no Japanese source confirmed that they are the same person, this being possibly a mistake from the English version. But the two do appear to have some kind of connection.