Translation:Hello, I am Sebastian, he is Andrew.
Agreed. If Andrei, Ionna and Mihai were to introduce themselves, they would not translate their names. The other languages do not require a translation of names either. Also, as a learner of Romanian, having to recall the translations of names, in addition to the grammar and vocabulary is, in my opinion, unnecessarily challenging.
How is "el e Andrei" not correct? Can't you use the short form here?