A series of error correcting codes is known as polar codes, able to provably achieve channel capacity for a large number of channels. Punctured and shortened codes are decoded by means of their mother polar codes, increasing the decoding latency with respect to the actual code length. To overcome this in this manuscript a Hybrid Billiards Archimedes optimization based Multi-kernel polar codes for 5G communications (MK hybrid-BAO) is proposed for 5G communications. The proposed method consists of three phases. At first the polar code is constructed, the construction phase includes encoding, tanner graph and decoding. In the second phase the polar codes are designed the design principles for multi-kernel polar codes are Reliability design, Distance design and hybrid design. And these design principlesare optimized with the help of Billiards Archimedes optimization. For distance design, maximizes the minimal distance of the code, and makes use of the minimum-distance spectra of the kernels. For hybrid design, generalized design based on a mix of both reliability and distance. The MK Hybrid-BAO is compared with punctured, shortened, MK, MK + KS, MK Hybrid polar codes. The proposed method attains performance gain in terms of BLER.