In the Kuma vs Lee matchup, like most Kuma matchups his unique size changes the properties of many of Lee's moves.
Lee's wall combos
d+3 ender
After the usual f+4,3 spike, Lee's d+3 is not guaranteed. Kuma recovers fast enough to stand and block it with D/B.
d+4,4,u+3 ender
Lee's d+4,4,u+3 will cause a side switch. Usually it doesn't.
d+4,4,3,3 ender
Lee's d+4,4,3,3 will cause a techable backflop. Usually it causes a regular knockdown.
D+4,4,4<4 ender
After the usual f+4,3 spike, Lee's D+4,4,4<4 will deal 23 damage. Usually only 13 damage from d+3 is guaranteed.
D+4,4,4,4 ender
After the usual f+4,3 spike, Lee's D+4,4,4,4 will cause a wall or balcony break. This can lead to huge combos, especially on Howard Estate, because the juggle pushback and screw get reset. However, Kuma can prevent this with a Spring kick.
Lee's neutral
ws2,3
Lee's ws2,3 becomes a full launcher with b+2,4,3. Usually only f,F+3 and R! d/f+3+4 can connect.