First up are the Wonder Twins with Josh Keaton fit for Quicksilver
and Grey Delisle for Scarlet Witch
along with the three potential young heroes that Marvel did not have Spider-Man and Taskmaster recruit due to their lack of patience on having the two opposite sides clash once everyone was recruited as well as not having to wait on the 4 part Spiderverse episode event and they are;
Rosa Salazar as Echo
Gregg Sulkin for Gravity
and David Henrie for Speedball
now for the villains that we want to see in the fourth season that should make it worth watching
Brian T. Denaley for Morlun
an evil immortal being who is known to be a part of a trend of supervillains known as the Inheritors Denaley is the #1 choice on voicing this evil villain because of the voice he provided for Scarecrow in Batman Unlimited Monster Mayhem was sinister sounding enough to fit Morlun's here in the animated Ultimate Spiderman series
and now for one of the toughest and most powerful supervillains that Marvel should have Spider-Man and his team take on who is also yet to make his actual MCU debut The Mandarin with TMNT2014 Shedder actor Tohoru Masamune as the voice of Tony Stark's greatest foe
As anyone that has seen the 1994 animated Iron Man series the first japanese actor that has voiced the Mandarin was Robert Ito despite the villain being chinese so clearly Tohoru Masamune who played the Shredder from the TMNT 2014 film would be the one japanese canadian actor to voice Mandarin in the animated shows Marvel is distributing on Disney XD today because with that bold accent he has he would be the best actor to put up a strong fitting voice for the character which is better than having Fred Tatasciore or anyone else voicing him so if we want the perfect voice actor to voice Mandarin with an actual asian voice then guys like Tohoru Masamune are the ones for Marvel to cast
to find out if any of these voice actors and characters will turn up stay tuned for season 4