Lina (ライナ) is one of the mascots of team Saitama Seibu Lions from Nippon Professional Baseball.
She has a brother called Leo, who is also an mascot of the team.
Not to be confused with Kimba the White Lion, although she was also designed by Osamu Tezuka.
You will be forgiven if you do confuse her with Kimba, though.
Because she is basically an anthrofied and crossgender version of Kimba. LOL