This series introduces many new characters, including the Wilson family, as well as Aiden Wilson, the McReary siblings' new half-sibling. However the character has since been removed from the franchise.
Also, both characters appeared in "One Tough Break-Up", but only in a non-speaking cameo. This was the smallest role in the series for Angel and Salvador (however, Salvador had a much smaller appearance in the Season 5 comic "Trading Places", appearing in only one non-speaking cameo).
This is the second season to remain only in one year (2015), the first being Season 1.
This season has the least amount of appearances by Joel Gonzales, with only one mention and one actual appearance. In fact, the roles of other main characters Angel and Salvador became notably reduced with Hector and Aiden appearing, but their roles increased again by Season 5. Season 6 was a weird period after Aiden was removed and plots/characters had to adjust back to form, but the characters perhaps did not get on good track until Season 7.