Tennis star needs a nerf and Moto-X Star needs a buff
I have recently mastered tennis star to master rank and i can tell you this with absolute certainty he's a little too strong or a bit OP. He's way better compare to any other all stars. he has good fire rate and good damage altogether but the most important aspect to his ability is to move so fast while firing his primary weapon. with that he can dodge most of the attack which no any other all stars can do. all other all stars while firing moves very slowly which allows plants to damage them more accurately but that doesn't apply to tennis star. not only does he have good fire rate but also do good damage, about 27 to 36 dps at close range. he can also move around as fast or maybe faster than sunflower. he's like commando pea with 200 health and faster fire rate. my suggestion is nerf his damage output to maybe 5 or 6 damage per hit at close range. also the damage upgrade for this character doesn't increase his damage at all so that needs a fix. i did a test with it. no changes to his damage at close range.
Now with moto-X star. i think his mud effect needs to happen way faster or maybe immediately the moment you are hit. the sound effect of roadie engineer happens immediately you are hit so why not moto-x star. of course the longer you are hit, the longer the mud effect will last. i have not master this character yet so i maybe missing some upgrades that may be of benefits to my description.