The Boys is based on the comic book of the same name. In comics, they have a team called The Seven which is a clear parody of Justice League:
The Homelander (Superman parody)
Black Noir (Batman parody)
Queen Maeve (Wonder Woman parody)
Mister Marathon (Flash parody)
The Deep (Aquaman parody)
Jack From Jupiter (Martian Manhunter parody)
The Lamplighter (Green Lantern parody)
Later A-Train replaced Mister Marathon, maybe a Barry Allen/Wally West angle. And later Starlight replaced Lamplighter and she is most probably original character rather than JL parody as discussed in this answer.
But when it comes to the show there was no Jack From Jupiter and he is replaced with Translucent who is far from resembling Martian Manhunter and becomes the only anomaly to parody the seven of Justice League.
So what was the reason for this change? Is it some budget issue to stick with heroes with a human face or they wanted to keep it different from Justice League?