They look alike in the sense that they both have two arms, two legs, are men, are not 100% Caucasian, and are wearing swimming trunks.
Other than that, they don’t look like even very distant relatives. Facial structure, head shape and size; physique, arm length - no resemblance at all.
barry’s face looks tanned, but the rest of his 1/2 naked self looks pretty darned Dunham colored. That’s right, he is 50% caucasian, 8% Black and 42 % Arab. That splains it!