yes, it is possible to create these characters using tools of fAdobe Animate(Formerly Flash, and make loops with animations, export videos with transparent background, (can be called video with alpha)
Relevant Skills and Experience
I have skills using Adobe After Effects and, besides, I am Digital illustrator of game or comic characters, you can visit my portfolio to corroborate my quality.
Proposed Milestones
$55 USD - first look of Character
$200 USD - 2nd udate
$300 USD - final corrections + export to all formats you need to add for youtube channel.
Additional Services Offered
$35 USD - banner for youtube
can you send a message me ?