Lagrangian radius evolution (10%, 50%, and 90%), radial position of the MMO (gray line), radial position at formation for stars that collide with the MMO (star symbols), and radial position of the same stars at the moment of the collision (filled circles) for simulations with different ε_SF and for a simulation with rapid SF (E6). In general, we see that the object that becomes the MMO is formed early on in the cluster evolution and rapidly sinks to the cluster core, where it eventually experiences the collisions that turn it into the MMO. The formation of the MMO is marked with a black star symbol. The moment at which SF ends is indicated by a vertical dashed black line.