Carbon is added to single-crystal nickel-base superalloys to reduce the formation of grain defects. Carbon and a carbide former drive precipitation of carbides at grain boundaries reducing grain boundary sliding. In this paper, carbide formation in nickel-base superalloy René N5 was studied using optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Samples of René N5 were fabricated using scanning laser epitaxy (SLE), a powder bed fusion-based additive manufacturing (AM) technique. The carbides formed in these alloys were mostly Chinese script-type carbides which formed discrete networks in the interdendritic region. In addition, blocky and elongated carbides were also observed. EDS analysis showed the carbides to be Ta rich. The findings also showed the presence of rhenium in the Chinese-script carbides. However, rhenium was not found in the blocky carbides.