A Black variant of Le'boin. He has slightly longer range than Le'boin, with higher health and attack power but lower movement speed (by one).
Using Ururun and Bahamut with good meatshielding is the general way to deal with Le'noir, but it is very tedious.
If you have Major Leaguer Cat and if Le'noir is protected by other bulky enemies that do not get easily knocked back, do not send out any attackers other than Major Leaguer Cat, though you still need to meatshield well. He will be able to consistently chip off health from Le'noir, with the other bulky enemies still intact. Thus, you'll be able to defeat Le'noir by cleverly making use of other enemies. Works extremely well in mid to late-game stages like Leadfoot Drive and Angry Fighting.
Le'noir is particularly vulnerable to stunlocking by Bombercat, due to his long time between attacks. However, as Le'noir is usually sent with many frontliners or supported by other Le'noirs, this only works in a few situations.
One more strategy is using Manic King Dragon, as he in his true form has enough range to effectively chip away at Le'noir along with other ranged attackers, a well timed Pizza Cat can also at least hit Le'noir once, doing massive damage to him, although he may be a cash drain if you aren't able to time him correctly.
This ink-black elephant collects hard-to-get sexy videos from east and west and past and present.
Heedlessly keeps back anyone who comes close because of something that would lead to serious trouble if it were confiscated.