Doppler Attack (ドップラーアタック Doppurā Atakku?) is the special weapon Forte obtains from Komuso Man in Rockman & Forte: Mirai Kara no Chousensha. With this weapon Forte changes into four miniature copies of himself while the attack button is held. While active Forte is invincible and can fly freely all over the screen, being able to pass through walls and damage enemies by touching them. This weapon can also be used to escape from hazards like spikes and pass by narrow passages that usually only Rockman can pass by sliding. Forte will die instantly if he returns to normal in a solid terrain.