  In this paper, we establish the existence and multiplicity of multi-bump
nodal solutions for the following class of problems $$ -\Delta u+(\lambda
V(x)+1)u=f(u),~~\mbox{in}~~\mathbb{R}^2, $$ where $\lambda\in(0,\infty)$, $f$
is a continuous function with exponential critical growth and
$V:\mathbb{R}^2\to \mathbb{R}$ is a continuous function verifying some
hypotheses.
