Forest Berry (born Spring 4, Year 2) was the eldest son of Minthe Berry and Raphael Williamson. He was born on Spring 4, Year 2 in which an elderly ghost helped deliver his birth. In This Challenge Is Too Hard, Minthe baked a matcha tea cake for her son when he aged up to a toddler and got the Charmer trait. In Play 1 Family for 10 Generations (Rose) Forest aged up to a child along with his sister who aged up as a teen at the same party. In Kiss All My Friends, Forest was found calling a sibling through the phone even though all the siblings live inside the house.
In episode #4 of the Yellow generation, Summer, Poppy and Haru come visit the original Berry household, and now not only Forest, Jade and Hunter are living there, but Melina (Forest's wife) is living there too. While everyone was hanging out, Forest went out in the open and got abducted. When he came back, Kelsey checked and Forest was pregnant with a female baby from Senior Pollination Technician III. Coincidentally, the alien that impregnated him was the one who did the same thing with his mother when she became pregnant with his older sister.
In episode #5, we discovered that Melina Berry (Forest's wife) has died. In episode #9, while checking Summer's relationships after Kakeru's death, Kelsey finds out that Forest has died and assumes that Jade will be the next. However, Jade comes over to help Summer process her grief and is pregnant and no longer an elder.
In episode #2 of the Gray generation, when Summer and Skylar are in their quest to find their longlost family members, they enter Minthe and Raphael's old house only to find that four people are living there, three of them being Maegan Berry, Vivienne Berry (who is confirmed to be Forest's daughter) and Nicole Berry (who, after being fixed in CAS, is taken to the quest as well). It seems that, after Melina's death, Forest had married Maegan. We can see that Forest's spirit is fading away.