Wally Wackford/History

Past
As a child Wally attended Mammon's concert where he was picked up and stretched by the Sin while he advertised his Clown Pageant.

"Loo Loo Land"
Wally Wackford was promoting torches at Loo Loo Land when they were knocked over by Blitzo and Robo Fizz leading to the amusement park being set on fire.

"C.H.E.R.U.B"
After Lyle Lipton's death, he and Loopty Goopty were approached by Wally at I.M.P Headquarters who offered a job at Wacky Wally Wackford's Wacky Idea "Factory".

"The Harvest Moon Festival"
Wally appears as the announcer during the Harvest Moon Festival in the Wrath Ring.

"Ozzie's"
Wally can be seen operating the bar at Ozzie's offering Verosika Mayday a drink. When Asmodeus recognizes Stolas who is attending as Blitzo's date, Wally indicts Stolas of having an affair with an imp.

"Seeing Stars"
On Sinstagram, a post made by Wally with an unspecified sponsored advertisement could be seen on Loona's phone.

"MAMMON'S MAGNIFICENT MUSICAL MID-SEASON SPECIAL (ft Fizzarolli)"
Wally can be seen attending the Greed Ring's yearly Clown Pageant hosted by Mammon. He also witnessed the full demon conflict between Mammon and Asmodeus.