Samantha Lo Xin Hui, dubbed the "Sticker Lady'', and her alleged accomplice were charged on Tuesday with mischief.
Lo, 26, faces 15 charges of affixing adhesive stickers on traffic light controller boxes and spray painting words on public roads between November 2011 and May last year.
She also allegedly used red paint to spray the words "My Grandfather Building'' on the exterior wall of Realty Centre at Enggor Street at around midnight on May 17 last year. The cost of removing the wall paint was $3,500.
Her alleged accomplice, Anthony Chong Tze Chen, 30, a graffiti artist, is accused of eight charges, mostly for helping her to commit mischief while he acted as a lookout.
They are jointly said to have affixed a circular adhesive sticker with the words "So Kancheong For What'' on the pedestrian sign along Robinson Road on May 17 last year.
Chong is accused of helping Lo while she painted the words "My Grandfather Road'' using spray paint and a metal stencil along Telegraph Street, Maxwell Road, and Robinson Road between May 16 and 17 last year.
He also allegedly helped her act as a lookout while she affixed stickers with the words "Stop Looking At Your Phone'' on the pavement of the pedestrian walkway near two traffic light junctions in the city area on May 17.
The pair are likely to plead guilty to seven and three charges respectively. Their case has been fixed for mention next Tuesday afternoon. The total damage caused in Lo's case is $3,887 and Chong's, $3,723.
The maximum penalty for mischief is one year's jail and a fine. If damage or loss caused amounts to at least $500, the penalty is doubled.