Found 3 paintings (1 is a Popeye!) at a thrift store - I need help w/2 signatures

I found these 3 paintings yesterday at a local thrift store - one is by Montserrat Barta; a spanish artist whose works have sold in several auctions & is in several galleries
And2 others I can't make out the signatures on - a small abstract whose signature I can't read - does anyone know who the artist is? Is the painting any good?
I also found the Popeye painting which I liked as soon as I saw it(there were 3 but by the time I looked at the one I first picked up someone had grabbed the other 2) - can anyone tell me if it's by a known artist?
Thank you as always for your help!

 

Oh my goodness, Olive Oil is going to be SOOOO MAD when she sees proof that Popeye is with Betty Boop (and sporting a Playboy logo on his hat no less).

 

It's a painting

 

Thanks - I found Barta - it's the small abstract I don't know who did it or if it's even good?

 

I like the abstract. I think it’s salable as a decorative piece. No clue on the artist.