“The artist wanted to make her German, nothing wrong with that in fact I prefer German Tavi over British Tavi”
 
The name “Octavia” is Roman/Latin. Her ethnicity is unofficial.
 
“Octavius is a Latin praenomen, or personal name. It was never particularly common at Rome, but may have been used more frequently in the countryside. The feminine form is Octavia. The name gave rise to the patronymic “gens Octavia”, and perhaps also to ’“gens Otacilia”.
 
Octavia means eighth/8th, one of several Roman names based on numbers. Other feminine names of this type were Prima (1st), Secunda (2nd), Tertia (3rd), Quarta (4th), Quinta (5th), Sexta (6th), Septima (7th), Nona (9th), and Decima (10th). For the male forms just replace -a with -us: Primus, Secundus, Tertius, Quartus, Quintus, Sextus, Septimus, Nonus, and Decimus.

@Background Pony #8671  
Awwww, but she would look cute in a Brodie helmet.

Jawohl!

Octavia Baumer

@GlitchyShadow  
The artist wanted to make her German, nothing wrong with that in fact I prefer German Tavi over British Tavi

Wouldn’t Tavi be with the Entente? I thought the general consensus was that she was British.

She needs her own ask blog.