What's the Difference between Mario and Dr. Mario? (SSBU)

Dr. Mario isn't considered an echo fighter of Mario in Smash Bros. Ultimate - why is that?
That's what I'm going to explore in this video.

Thanks for watching!

My twitter: https://twitter.com/MegaAlexEXE

The intro and endcard music were made by my good friend Will (Liam Solas)!
Will's Soundcloud: https://soundcloud.com/liam-solas

If you have any questions or business inquiries, please contact me via this e-mail: alex.exe.business@gmail.com

Some of the songs used in this video are owned by Nintendo.
Tracklist:

Main Theme (Super Mario 64)
Underground Theme (Super Smash Bros. Ultimate)
Fever (Super Smash Bros. Ultimate)
Steam Garden (Super Mario Odyssey)
Ground Theme - Band Performance (Super Smash Bros. Ultimate)

Видео What's the Difference between Mario and Dr. Mario? (SSBU) канала Alex.EXE