I'm going to be throwing up a few top tens on popular characters from certain countries, this covers Anime, videogames and for this list non United Kingdom produced cartoons.
This rank is based on how Scottish they are.
Honorable Mentions: Any character who is obviously Scottish such as the Scotsman from Samurai Jack, The entire cast of Brave, Scottish Pokemon Trainer and Scrooge McDuck. I do want a challenge.
10. Alexander Anderson from Hellsing
This is more the dub representing him as Scottish as his nationality is never spoken of, but his name would suggest that he is Scottish.
9. Lilly Satou from Kitawa Shoujo
I don't know much about this character but she is listed as half Scottish on her official bio.
8. Jonathan Joestar from Jojo's Bizarre Adventure
Yep the first Jojo is descended from Highlanders, speak volumes about his abilities.
7. Edward Fokker from Power Stone
First glance you'd assume English but this ace fighting pilot in the anime adaption is actually Scottish as his uniform flag is the St Andrews Flag.
6. Mike Haggar from Final Fight
Scottish heritage and proud of it, his wrestling style even originates from Scottish back hold wrestling.
5. The Demoman from Team Fortress 2
We are now in the region of people actually from Scotland and Team Fortress 2 has one in the Demolitions Expert, not nearly as talked about as the Heavy or the Scout, he is nonetheless important to any team.
4. Johnny McGregor from Beyblade
Of the Beyblade representatives of Europe they overlooked England in favour of Scotland, Johnny himself doesn't seem much of a character but is one of only a handful of characters to defeat Kai on merit.
3. Moira MacTaggert from X-Men
A brilliant genetic scientist with a Nobel peace prize to boot, Moira was one of few human allies to the X-Men and was even engaged to Professor Charles Xavier.
2. Lydia Carlton from Earl and Fairy
Lydia is a Fairy Doctor, a voice that connects the mortal realm with the Fairy Realm and love interest of the Earl who is meant to be ruler of the fairy realm. One of only two full Scottish anime characters known in existence and considering it's a period anime set in Victorian Britain, she's an outright rebel.
1. Morrigan Aensland from Darkstalkers
It can't be anyone else, she's argubly the most famous female fighting game character since Chun Li and is probably the most likely guest character in a lot of Capcom's RPGs, shooters and smaller fighting games. She's a Succubus who just enjoys a good fight.