Who is this Salesforce mascot?
That's Earnie Badger.
Earnie was introduced on Salesforce's Official Blog:
How do you see the Trailhead brand? Who are the main characters?
[...] Earnie Badger was made for our community of passionate badge-earners. [...]
That must be Earnie, the new female badger. Heard about her the other day from someone in marketing., but she represents getting badges on Trailhead.
SHE is Earnie, a badger.
She was made for the community of badge-earners.