Reale replaced Alex House as Ace's voice actor towards the end of New Vestroia, and he voiced Ren during the early parts of Gundalian Invaders, before being replaced by Peter Cugno for the remainder of the season.
The passage describes a change in voice actors for two characters: Ace and Ren. Reale took over for Alex House's role, while Ren was initially voiced by him but then switched to Peter Cugno.