The self-assembly of C-s-symmetric tetrapyridyl cobalt metalloligand 2 with three half-sandwich diruthenium acceptors, 3-5, led to the formation of A(4)D(2) (A = acceptor, D = donor) metallacages 6-8, as shown by ESI mass spectrometry, NMR spectroscopy, and X-ray crystallography. The solid-state structures of 6-8 revealed that the length of the acceptor unit greatly influences the molecular packing of these metallacages. Hence, in the solid state, 6-8 can be considered to have waterwheel-shaped, tweezer-shaped, and butterfly-like architectures, respectively.