The activation cards only hold the name of the unit - 3 times (One big, centered, and 2 smaller, vertical, on the sides). So it's not that challenging.
We could imagine an in-between solution with one vertical smaller name in each language (and if you want it fool: the big one in its original Greek!).
The tricky part will be to check all translations (with care because acceptable translations do not necessarily mean common. E.g. Théseus is acceptable in French but most people know Thésée better).
I'll have a deeper check when I find the time...
EDIT: This is a (bad) sample of how it could look like: