  We present a new type of ultracompact objects, featuring lightrings and
echoes in the gravitational-wave spectrum. These particle-like solutions arise
in Einstein-scalar-Gauss-Bonnet theories in four spacetime dimensions,
representing globally regular spacetime manifolds. The scalar field diverges at
the center, but the effective stress-energy tensor is free from pathologies. We
determine their domain of existence and compare with wormhole solutions, black
holes and the Fisher solution.
