Phineas Mogg is a scientist, the creator and father of YK-9, and the arch-rival of Nora Wakeman. According to her, he constructed his entire career stealing her ideas, and copying it on his inventions.
Phineas Mogg is rather snide toward Nora Wakeman, and is passive-aggressively competitive with her when it comes to science and inventing. He often teases Nora, enraging her. After seeing how impressive Jenny is when she saved everyone at the robotics convention in Tradeshow Showdown, Mogg created "Kenny" (YK-9), as his own robot son (who first appeared in Love 'Em or Leash 'Em).
Though Mogg is Nora's rival and can be condescending and rather conceited at times, he is not evil or villainous.