Middle names for a girl and for a boy? Read below want I'm looking for...but open to suggestions..?

So I was thinking of the name ANGELIN or ANGIE FOR the GIRL... AND I was thinking of SASHA FOR the BOY..but I can think of a middle names.. any ideas? Or maybe u could suggest another name? But also with a middle name....BUT the thing is..we r living in Spanish speaking country so I would like for their names to sound good in Spanish AND English (that's why I picked angie, angelin and Sasha) ..sry I'm being picky but I'll b open to ANY suggestions. Ok so most people think i want them to sound Spanish BUT NO I just want them to sound good in Spanish like mark would NOT sound good is Spanish but max would and it's an American name!!!