Saturday morning tyke leader Kids’ WB! has altered its lineup slightly, adding a second run of “Men in Black” and finding a new weekday afternoon slot for the hit phenom “Pokemon.”

In the net’s first shuffle of the fall season, Kids’ WB! will rest “The Big Cartoonie Show,” which had aired at 11 a.m. Saturdays but still will air at 3 p.m. weekdays. “Detention,” which had aired at 10:30 a.m., moves into the vacated slot.

This leaves room for the second run of “Men in Black” at 10:30 a.m. The animated Columbia TriStar series, based on the film, also will continue at 9 a.m.

Kids’ WB! will keep running episodes of “Pokemon” on Saturday mornings at 8:30 and 10.

Meanwhile, “Pokemon” moves from 3:30 to 4 p.m. weekdays, replacing first half of the hourlong “New Batman/Superman Adventures,” while the latter reverts to a half-hour and moves to 3:30.

At 4:30, Kids’ WB! will alternate between “Batman Beyond” on Mondays, Wednesdays and Fridays, and “Men in Black” on Tuesdays and Wednesdays.

Bolstered by “Pokemon,” Kids’ WB! is the Saturday morning leader among kids 2-11 with a 4.2 Nielsen rating/18 share season to date. This is ahead of Nickelodeon (4.0/18), Fox (2.9/13) and ABC (2.7/12). Kids’ WB! also leads weekdays with a 2.2/14, tied with Nickelodeon (2.2/16).